Hi Pigman,
I never saw any type of ski so I can only assume their flat on the bottom and want to ride smooth on the air.
OK on the hi speed problem but have you ever used floats?
I'm working on 2 planes here.
One i'm putting on a tail wheel.
That front wheel grabs a lot of air.
The other is a big airstrike and I want to put floats on it.
You have any idea how much the floats will slow down the speed?