Today after sailing I noticed about 2 inches of water in the bilge of our 22 foot sailiboat. Never saw water in there before. Keel bolts are there and its always dry. We don't use a sink or head on the boat so I'm guessing the water is either rain water(it rained alot the last few days) or its coming in through the hull(I hope not!). I'll be checking on it in a couple of days when we head back...meantime, anyone have any hints, could this be rain water or do I need to be concerned about something else?