I use the suction cup on my little boat when i go pond fishing. Mine only stays on for about 30 mins then i gotta put it on agian. A buddy of mine uses one also and his stays on the whole fishing trip. We both have 12 foot jon boats. I don't mind putting mine back on when it falls off but i wish i knew why his stays on all day and mine won't. They are fairly cheap and you dont have to drill holes in the boat. Hope that helps.