This may be a dumb question, but I'm new to boating and I dont want to screw anything up (or try to at least minimize my screw ups!). I have a 96 chris craft concept 21. There is a compartment just aft of the ski locker in the deck that has a drain in the bottom. What's this for? Can i use it as a cooler? Is that what it's for?IS the water that would drain from ice be a problem going into the hull? I can't find any manufacturers info on the boat, so any input would be appreciated!