What plane is that in your avatar?
It is my own design Jet Trainer. I call it "JayTee" (not very original with names)
It flies really well on wheels from just about any club field, and then I put it on floats (home-made veneered foam) and it flies extremely well off water too.
I uploaded a few videos onto YouTube Here is one. check out my other uploads for some more (or search YouTube for "Wren jet waterplane JayTee"
JayTee is 80" wingspan and is powered by a Wren turbine with 63 N (14 pounds) of thrust. Dry weight is about 13 pounds, and it carries 2 litres of fuel.