Talking about speed, and forgive this being a classic diversion, but is the effect of water depth taken into acount on speed records?
All I know is that planing boats (Airboats) plane off much more readily in 3 feet of water than ten or more, even though they may only draw 4" of water, max. This surprised me, and when you consider the ditch in France? (where the windsurfers set speed records), this must be an issue.
I imagine narrow hulls are very insensitive to anything over a few feet of depth, but does anyone know?