Hi Mary...

Just a thought, another possibility for cheap floatation assistance might be had from empty plastic soda or water bottles. They are pretty light when empty, of course, this is assuming your boat has access ports large enough to fit them through. My H16 has the styrofoam blocks between the pylons, but with my 6' access ports, I could add a load of empty 2 litre soda bottles to the hull if I wanted the extra displacement. Downside--I guess they would float away if the hull was severely breached.

Mark Owens
1976 H16 sail # 19857