I went on a bit of a mission over the weekend to make this portable fishfinder suction mount with a GPS on the side. I first modified my fishingski hatch to open forwards. It used to open on the side. I then also covered the lid with black perspex ( Or some sort of signage plastic, they joys of working at rent a store you find some interesting things in the waste skip). A while ago I added a suction mount to my fishfinder. I made a suction mount for the gps but thought that is a waste. Lets just make one suction mount. So this was the final product below in the video.
Portable fishfinder Suction mount with a GPS on the side.
In this link is still my mount for the transducer and battery. I am thinking about getting a smaller battery so will change the battery box to make portable fishfinder more portable.