how can you tell if the seepage is from the joint ? I've been wondering about it as well on our 272...we've had a little water in the bilge (not enough to activate the bilge pump) but the boat is now out of the water and I'm thinking of pouring some antifreeze down in the bilge and checking it from outside to see if the seepage is really from the bolts or the keel joint itself...maybe this doesn't make sense in that it will only tell me there is a leak not what is leaking.