Simply bringing a rag with you is a small price to pay for much faster operation with the touch screens. Typing a simple description for a new waypoint can take 10 minutes on the button only machines. Besides, the salt does not seem to stick to my touch screen like it did to my old HDS 5. I carry a tiny squirt bottle, but rarely ever use it. Water droplets are more of a nuisance to me, so I wipe them down before they dry.
OP, nobody knows what the best fishfinder is, cause nobody has used them all long enough to make an educated guess. Stick with the ones that you are not hearing user complaints about and that you can get a good extended warranty for. Those are going to be your primary concerns with your unit fishing from a kayak.
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