Fishfinder will not "shoot" through hull

[sandydiego]

Originally Posted by salty pirate

Your right the temp of the water that's inside the 5" pvc inside the hull of the kayak couldn't dif-fer from that of the surface temp.

The heat loss through the polyethylene hull is why it works. The PVC and cap just keep the water in place. We have compared it to a in the water mount and it read the same.