Originally Posted by Redrock
The Honwave's floor had quite a deep vee and its entire length was in contact with the water, providing quite a lot of the boats displacement and buoyancy.
The air floor does not contact the water; the boat's bottom does. The buoyancy is due to the bottom fabric displacing water, not the floor displacing water.
I must add that your analogy about lifejackets didn't reflect what I was saying at all.
Yeah, because you missed my point about buoyancy created by stuff displacing water.
If: the floor, by itself, is buoyant, and having it in the boat adds buoyancy (as you said), then putting lifejackets (which are also buoyant) in the floor of the boat should also add buoyancy (in the same manner you claim the floor does.)
In truth, they don't, because, being inside the shell of the tubes and bottom, they do not displace anything exept air.