Just a heads up that foam is banned in some public waters, with hefty fines. Don't know if applies to WW type craft, or if it is enforced. Some kind of durable coating looks to be a good idea, as my original WW would wear down underneath and lose tiny to small pieces upon impacts. Some types of uncoated foam absorb water and drain very slowly, would get my carpet wet if transported it in a van... My homemade version was easily made from pontoons cut from an old foam dock float and bolted together with 3 threaded rods, worked well and comfortable with a fold down low beach chair.
Hope this helps.
Edited by porta (11/13/15 12:01 PM)
Edit Reason: interrupted post adds