The only boat we have ever had that did not leak was a Nacra 5.5 uni. We checked the hulls regularly through a whole sailing season, and there was never anything in there but dust. It was absolutely amazing!
Just for the record, my H16 doesn't leak a drop. With all the pounding that I put that rig through I'm surprised it hasn't collapsed let alone leak!
John
Palmdale, Ca
H16
