Securing Battery box and XDucer

I've finally gotten started on a decent waterproof setup for my FF battery (blue brick).  I have a plastic snap top box for it and was thinking I'd secure that to the inside of the kayak with velcro.  At first I was thinking about using self-adhesive strips but wasn't sure it would stick well enough to the yak.  SWMBO suggested maybe using regular velcro strips and using Goop to adhear it.  Thoughts?  Anything better?

Also, for the xducer (Lowrance skimmer type) I was hoping to use the scupper in the tankwell.  But I'm too cheap to buy the kit for that from Lowrance.  So I was thinking I'd just Goop some foam to the scupper with a cutout that I can wedge th xducer into.  Basically the foam puck method a lot of guy use just on the outside rather than inside of the yak.  Good idea?

Not sure what you paddle, but I have my battery box just tied to the mast support inside my outback with some bungee...makes it easy to remove and never had it slip out.  I haven't had a lot of luck with velcro; seems like once it gets soaked it doesn't hold all that well, but I may just not be using the good stuff.

For the transducer, I really like the duct seal method.  Just need one brick so it's cheap and works great along with being quick and easy to set up or move to different locations.  Here's a video if you haven't seen it already:



I stow my yak suspended upside down and the transducer stays put...no issues in the last year anyway.

Not sure what you paddle, but I have my battery box just tied to the mast support inside my outback with some bungee...makes it easy to remove and never had it slip out.  I haven't had a lot of luck with velcro; seems like once it gets soaked it doesn't hold all that well, but I may just not be using the good stuff.

I've got an OK Prowler 13.  Not much internally to tie the battery box onto.

For the transducer, I really like the duct seal method.  Just need one brick so it's cheap and works great along with being quick and easy to set up or move to different locations.  Here's a video if you haven't seen it already:



I stow my yak suspended upside down and the transducer stays put...no issues in the last year anyway.

I'll check that out tonight when I get home.  But, I would like to figure out a good way to get the transducer in the water.

You can tie it to a scupper.  Velcro will work fine, unless you huli, which probably won't matter as long as you're on your way in.

i ended up using a piece of cutting board i cut to wedge into my scupper hole, mounted the 'ducer on the end of it.  I then run the chord through the small deck lid behind the seat.  battery in the hull, run the chord up through the front deck hatch up to the unit.  I get the water temps, and i never drilled a hole in the boat, although water probably does get into the hull in the unlikely event of a huli. i dont get salty yet, so surf isnt an issue with me.  I can take a picture for you if you want

i ended up using a piece of cutting board i cut to wedge into my scupper hole, mounted the 'ducer on the end of it.  I then run the chord through the small deck lid behind the seat.  battery in the hull, run the chord up through the front deck hatch up to the unit.  I get the water temps, and i never drilled a hole in the boat, although water probably does get into the hull in the unlikely event of a huli. i dont get salty yet, so surf isnt an issue with me.  I can take a picture for you if you want

That would be great to see some photos.

Lee - the nearest scupper is quite a reach from the bow hatch.  And is really the only access to the interior of the kayak, unless I cut a new hatch.

i'll try to make some pics this evening- i pulled the fusih finder and all chords out this last weekend to take with me ice fishing, but i will show the ducer mounted on the cutting board (you all have seen the chords ran through the hatch before) and then it in the scupper hole in the bottom of the boat

i tried to take clear pictures. first couple are the profile, then it put in place in the scupper hole, then from the top side.  and the last pics are of how i attached the Ram mount base through a piece of cutting board, to the scotty base without compromising the hull.  I pull the chords though the scupper, into the rear hatch, up through the hull, and out the front hatch with the battery up front as well.  everything stays pretty tight. probably not a great idea in a surf huli i imagine, but i leave the transducer in all season, even during transport.  the only thing i would change is probably make the cutting board piece a bit longer as i have to essentially push the transducer right snug to the hull for the best fit.  i attached the transducer using a little lag type bolt, the threads turned into a hole in the cutting board.  if i had a battery box, i would probably use some good hook and loop (velcro)  secure the hooks inside the hull and the loops to the bottom of the box, use some sort of adhesive to hold in the humid enviro.

Thanks!

My Blue Brick Battery Box is secured to the bottom of my Prowler via a couple of 1 7/8" rounds of Industrial Velcro that can be found at most any larger hardware store.      I just scrubbed the kayak surface with denatured alcohol prior.  Transported it upside down several times and eventually decided I wanted to move the box back a couple feet.  With as hard as it was to peel the stuff off the bottom of the kayak,  I got the impression it was sticking very well.  With the light weight of a Blue Brick set up,  I think it would stay put very well

I went the simple route and it has served me well since 2008. I found a high density foam kids paddle board at the local hardware store. The kind a kid learns to swim with in a pool. I cut a rectangle out of it big enough to hold both the puck and battery. I cut a puck hole and a hole that the battery wedges down into. Also added a velcro strap to secure the battery. I glued the whole thing onto the bottom of the yak with marine goop. On the battery itself, I sealed the connections with goop, therefore eliminating the battery box completely. I use an automotive style trailer connector to hook the battery to the fishfinder wiring. All you have to do is add a little water to the hole that the puck sits in before hitting the water. I used a piece of pool noodle to wedge between the puck and the bottom of the deck to keep it in place. Probably not needed because the puck wedges in the hole pretty tight. I have a photo that I posted if you would like to see the setup.