Just got a Humminbird 385ci and was wondering if the curved hull of the Ride 115 will cause any problems for the tranceducer? I mounted it right inside the front storage and could not find a flat surface to mount it. Any advice will help and is appreciated.
Why not just use the slidetrax system--they make an accessory just for mounting fishfinders. I've been looking at that for when I pull the trigger on my first yak this year, since I'll be splitting time between lakes and creeks/rivers. Not only will it be easy to remove when I'm done, the transducer can be rotated out of the way. As to the cable, I saw a video where someone used heatshrink tubing to hold it against the arm of the mount.
Ideally, you want to mount it as flat as possible to read properly for the return signal. There are several ways to mount it externally using the slidetrax and a few mounts from yakattak or even use the liberator deployment arm. I mounted mine externally with a custom bracket on the rear of the boat.
There really isn't a flat spot inside the hull of a Ride 135, but the area of the pontoons close to midship are not too bad. You can float the transducer in a puddle of Lexel or Goop with good results.
Chris points out the advantages of exterior mount in his post and either of those work well. The flip down eliminates the damage you can get from a fixed mount.
I just installed a Humminbird 170 on my Ride 115. I picked the least curved spot I could find which was just right of the 8" orbix hatch. I used the Humminbird kayak transducer mount kit. It comes with a transducer "cup" you have to double stick tape down. I let it cure for 24hrs with weight holding it down. I inspected the tape joint and it wasn't uniform all the way around the cup. I put silicone around the perimeter of the cup just to make sure it would be sealed. Then you put grease in the cup, the grease is supplied with the kit. It all works well. However, I'm afraid to trailer or store my kayak upside down. It seems it could be a potential mess. If I was going to do it again I would mount it the way Chris did his. Regards, Paul