Yeah...I think that needs a rewording.

Is the intent also to allow the hull construction foam as part of the positive flotation? My F16 conforms to its requirements with just the hulls foam (no dedicated positive flotation foam). I have no problem with it being counted towards the positive flotation volume.

I do have some concerns about allowing a single air bag in each hull for positive flotation. My intention isn't to complicate the existing rules, but without appropriate securing of multiple air bags, one air bag may be rendered completely useless during a collision.