spinning

Hello All, Recently our electric tongue jack (FIC 3500) started spinning when we raise or lower it. Works fine if I hold it to keep it from spinning otherwise, it just spins in place. I’ve done a couple searches on the web and can’t find anything that describes my problem. Anyone out there...

New to this and not sure but I'd like to use the truck to pull my boat also. 2001 Volvo 660 single axle air ride and double bunk high sleeper with 13 ft hauler bed. Concerned with losing traction on wet boat ramps?