Recent

Author Topic: Transducer Arm vs. In hull GOOP mount?  (Read 765 times)

0 Members and 1 Guest are viewing this topic.

Offline Hook

  • Greenhorn
  • *
  • Posts: 8
  • Karma: 0
Transducer Arm vs. In hull GOOP mount?
« on: January 07, 2018, 10:12:47 am »
Hi,
I'm looking for advice on what transducer install I should go with. I have a Pelican Catch 120 NTX.

I read the pros and cons and I'm still unsure.
Scotty's Transducer Arm or In hull GOOP install.

Thanks everyone!


Offline Ravyak

  • Old School
  • *****
  • Posts: 578
  • Karma: 14
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #1 on: January 07, 2018, 11:49:44 am »
If it is just regular sonar(not SI) thru hull is nicer since the extra drag of a transducer arm sucks(especially in a paddle kayak).

The trick is getting a good install so your readings are good. I have never done one myself, had a buddy use the duct seal method but it was hit and miss, nice because it is cheap and removable though.

Offline Red Rocket

  • Old School
  • *****
  • Posts: 708
  • Karma: 10
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #2 on: January 07, 2018, 12:15:58 pm »
Seven years ago I did my third through-hull transducer installation using Goop on the Outback I'm still using and have never had any problems with any of them other than the plastic keel in the Outback is too thick to get an accurate temperature reading. Other than that I'm happy.

The key point is not to get any air bubbles between the transducer face and the hull and the key to that is to first warm up the tube of Goop in warm water so it flows smoothly. My first two installations I glued a form made of flat pool noodle to the hull, squeezed the Goop into the form, then gently worked the transducer down into the Goop, and let it cool. Worked just fine.

With my Outback I was in a hurry to get out fishing one day when I first got it so I just squeezed the Goop onto the hull with no form thinking I'd reinstall it later on using a form but it worked perfectly and I never did anything else to it.

I've seen a lot of different transducer installation methods described on the internet but in my opinion the degree of difficulty most people use is not needed. Obviously, to each their own but why not try the simple installation first and if you aren't happy with it just warm the Goop up with a hair dryer, remove the transducer and do it again differently.

Just my 2 cts.

By the way, I looked seriously at the Catch 12 as a second (paddle) fishing platform when it was first released a couple of years ago but I've been so happy with the Outback I decided to just go on going on with it. Nice rig though. Have fun no matter what you decide.

Where are you, Hook?
Don

Hobie Outback
Toronto

Offline John Gibson

  • Administrator
  • Old School
  • *****
  • Posts: 2553
  • Karma: 29
  • Team CKA
    • Canadian Kayak Anglers
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #3 on: January 07, 2018, 01:25:51 pm »
I'll 2nd Red Rocket here.
Warming up the goop makes it a lot easier to work with and will help with removing a lot of the bubbles. 
Through hull works just very well.  You'll get similar temps, and as long as you get out most of the bubbles, You'll also get very accurate readings.
If you dont like it, you can always remove it too. With a little elbow grease it can be removed (I've done it a few times). 

I own the Scotty transducer arms as well.  They work great, but like Tyler said, they can add extra drag to the kayak, but its not something that will make your day go from okay to terrible based on just that alone. 

Some will like the Scotty arm due to being able to remove it and transfer that sonar to another kayak, or use it in another application. 


Ocean Kayak Pro-Staff Member
Aquabound Pro-Staff
Scotty Pro-Staff

Kayaks:
Ocean Kayak Trident Ultra 4.3

Follow CKA on Twitter  @CANkayakanglers

Offline Ravyak

  • Old School
  • *****
  • Posts: 578
  • Karma: 14
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #4 on: January 07, 2018, 02:37:32 pm »
I guess one reason I don't like transducer arms is that mine was for a big side imaging transducer which gave off significant drag, the little regular sonar transducers probably aren't near as bad. As John mentioned the main reason to use an arm is if you want the transducer to be easily removable/transferable.

Thru hull temperature works but it takes time for the heat to transfer through the plastic, goop and transducer and your values might be a bit high due to warmer air temperature. I rarely care about water temp personally but if it affects your type of fishing then it is something to consider.

One other thing to consider is how you plan on running your wires and how your fish finder head unit mounts. If you do it on an arm then you either need to be able to remove the head unit as well or be able to easily remove the head unit wires(not easy on every unit). If you put the transducer in hull then you most likely want the base and wire connections to also be permanent on the kayak or at least connections that are quick and easy to undo. I bring this up because my old unit wasn't a quick release style and the threads probably would have stripped if I was trying to undo the cables every time. Having the transducer arm and the fish finder head on its own Scotty mount made it easy to remove the whole unit without having to disconnect anything. On my new kayak the transducer stays in place and I have to remove the cables from the fish finder every time and tie them up out of the way, my new fish finder works decently for that though whereas my old one would have been a nightmare.

Offline Hook

  • Greenhorn
  • *
  • Posts: 8
  • Karma: 0
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #5 on: January 07, 2018, 10:43:13 pm »
Thanks everyone, I'm not honking in hull.
I'm from Ontario, Newmarket.

I should have mentioned I'm using a Garmin Striker 5cv.
It does have a down view will it affect the transducer if in hull, I don't think so based on what I've been reading.


Offline PikeCreek

  • Old School
  • *****
  • Posts: 1189
  • Karma: 19
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #6 on: January 08, 2018, 07:08:23 am »
Like everyone has said so far, if your unit is not Side Imaging then thru hull is the way to go.

http://pka.canadiankayakanglers.com
Hobie Adventure Island, Hobie Revolution, Hobie PA 12, Hobie Quest 11

Offline Hook

  • Greenhorn
  • *
  • Posts: 8
  • Karma: 0
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #7 on: January 08, 2018, 08:07:40 am »
Like everyone has said so far, if your unit is not Side Imaging then thru hull is the way to go.

Thank You!

Offline Northdogboy

  • Ultra Light
  • **
  • Posts: 41
  • Karma: 1
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #8 on: March 21, 2018, 12:27:05 am »
I use the Scotty arm. And yes I do notice that drag when I'm putting the miles on.  But if I'm just moving from point to point I'm not fishing so I just pull it up for the time.   But I also have a navionice app.  To find my underwater structure

Offline EagleEyesFlash

  • Hall of Fame Moderator
  • Old School
  • *
  • Posts: 1883
  • Karma: 20
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #9 on: March 21, 2018, 08:25:01 am »
Transducers directly in the water get the best readings. How to mount a transducer can depend on size and type.
Some mount snuggly using a scupper mount ( some  Lowrance / Hummingbirds ). Would be nearly impossible to goop some Raymarine ducers ( big long skinny thing ). I will never goop a transducer again due to poor readings through hull.
Snag or Fish? Weed or Fish? Oh,Fish-On !


Offline Hook

  • Greenhorn
  • *
  • Posts: 8
  • Karma: 0
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #10 on: May 17, 2018, 01:33:21 pm »
Transducers directly in the water get the best readings. How to mount a transducer can depend on size and type.
Some mount snuggly using a scupper mount ( some  Lowrance / Hummingbirds ). Would be nearly impossible to goop some Raymarine ducers ( big long skinny thing ). I will never goop a transducer again due to poor readings through hull.

Thanks for the feedback... I'm about to build the battery box first. I keep changing my mind. hahah

Offline Red Rocket

  • Old School
  • *****
  • Posts: 708
  • Karma: 10
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #11 on: May 17, 2018, 06:08:55 pm »
I just velcro the battery to the inside of the hull. No box required. I've never had a problem with this battery installation. Others have reported McGuyvering some sort of waterproof box and I've never understood why they've felt the need, but to each their own.
« Last Edit: May 18, 2018, 04:39:47 pm by Red Rocket »
Don

Hobie Outback
Toronto

Offline Hook

  • Greenhorn
  • *
  • Posts: 8
  • Karma: 0
Re: Transducer Arm vs. In hull GOOP mount?
« Reply #12 on: May 17, 2018, 11:17:57 pm »
I just velcro the battery to the inside of the hull. No box required. I've never had a problem with this battery installation. Others have reported McGuyvering some sort of waterproof box and I've never understood whyj they've felt the need but to each their own.

Thank you. I'm sure it would work great but I need something to keep me in the garage :) lol