I'd like to find a unit that takes the GPS chips for both the boat and cold weather sports, that I can use on the trolling motor location of the boat for sonar......screen size not a big factor--but color a bonus....
Anything come to mind? Built in antanae makes sense, I'd guess.

I use to to put my Lowrance X-18 on my snowmobile untill I picked up my handheld lowrance H2O C. I have a buddy who had an Eagle GPS on his snowmobile. We live in ND and haven't had issues when it gets cold.

lowrance lms 522...... you can have chips, make it portable via cigarette lighter..... use it ice fishing, on the boat, wheeler or sled or in car for live paper map.......