Need some help and advice with this problem, '88 E-38-200. Sailed from Marathon to Port Charlotte last spring and hauled out for the summer while I went back to Canada. First time hauling out in Florida and was advised to fill up the fuel tank while it was up on the hard for the summer. 3 weeks later got a call from the marina office that my bilge pump was pumping diesel fuel over board. I asked them to go in and have a look and sure enough the bilge was filled with fuel and it spilled over onto the cabin sole, fuel guage read about 2/3rds. They emptied out the bilge and next day it was full again once again emptied out the bilge by hand, fuel tank just 1/3rd now. Yard manager advised me to let the fuel leak until it stops to get an idea of where the leak may be. Well after about 3 wks the tank finally emptied itself. I have never had any fuel in the bilge in 3 yrs and the bilge was bone dry for 4 days while prepping the boat for summer storage. I just got here to Port Charlotte and now faced with the daunting task of trying to figure out the origin of this leak. I'm having a hard time believing there is a hole in the tank all of a sudden like that. I will obviously start by checking lines and fittings tomorrow. If any one has any advise on how to tackle this I am open to reading all your idea's. Thanks