Yes, ground clearance (esp. with deflated nose strut and/or tire).

Hee hee...why is it always the obvious one's that stump me?!


Perhaps because this isn't necessarily correct. Prop blade impact with water
is every bit as damaging to the prop as asphalt -- if not worse. I bet
seaplanes sound different from landplanes (if indeed they do) because of the
sound reflectivity of water vs asphalt/concrete/whatever.

Quent