"nobody" wrote in message
...
Talk about luck. I had been contemplating the purchase of a 4x8 block
of styrofoam to build a working raft so that I could work on my hull.
Today I walked out to my dock and lo and behold there was a new piece
of styrofoam, just the size I intended to buy. Now I would like to
know if anyone knows of plans or has suggestions of how to turn it
into a work raft. I guess one needs to keep the weight down so the
more I put on it (i.e., a sheet of 4x8 treated plywood on top and
plywood banding around the sides. Someone in this gorup must have
done this. How??? Thanks.

You don't need to care about wheight to mich, regarding floatation. That
block can carry around 900 kg/2000 lbs before it sinks. So even coating it
with a thin layer of cement, reinforced with some chickenwire, will keep it
floating. Making it a bit heavier will even help stabilizing the platform.
Floating docks are made this way.

Meindert