it was attached to the styrofoam hull by a strip of plywood, and the plywood had bubbled and rotted off. Now it was loose in my hand and i pulled it up into the boat. We had started to spin on our center-board and i worked on the letting out the sheet. The wind whipped it from my hand and the sail went limp. We stopped spinning and sat dead in the water, the wind starting to push us towards the middle of the lake.