I would highly recommend an auto bilge. Last year was my first time at keeping my boat docked and i learned the hard way very early in the season. I had no auto bilge and when i showed up after a couple weeks snow and rain had got into my boat and completely submerged my one battery and both 2 cycle oil reservoirs. Needless to say i had quite mess. I ordered a sahara 750 auto bilge and wired it directly to the battery. I ran it through one of the manual pump hoses with a 3 way y pipe and now have 3 bilges . Problem solved but not after having to deal with a big mess.