I bought two tires from Princess Auto and i had to return them. The hole in the center of the rim was alot bigger then my hub. I didn't like the look of the bias ply tires either. Radials ride alot smoother.
I use a normal fishfinder and it doesnt like the cold. My friend has the showdown. The showdown has a build in heater so it is good outside at 20 below. It also includes the battery and charger.