A post on another ng concening rolling a small boat up the beach on
fenders got me thinking, why not have an inflatable "dock" that would
lift a boat above the water to prevent fouling or keep it from being
on bottom in large tidal ranges. Anchor this thing to the bottom with
those screw in type anchors, inflate and Voila, your boat is well
above water level. Even fairly large craft could be elevated this
way.