The solution in folding boats is to place {HEAD ~ air bladders} in {TAIL ~ the sides} of the boat between the hull skin and the skeletal framework of the boat while maintaining as close to the ideal mattress shape and the proper orientation required to control flex of the air bladders 
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The solution in folding boats is to place { HEAD ~ air bladders } in { TAIL ~ the sides } of the boat between the hull skin and the skeletal framework of the boat while maintaining as close to the ideal mattress shape and the proper orientation required to control flex of the air bladders
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH