The sled, is coming along pretty good. Naturally it helps to build a metal Air Boat if you have the metal working tools and skills.
It would be something for me to make but with hand saws for wood it might take to many years and saws to complete. Not sure if the seams on mine would hold up with just gorilla tape over them.
Back to your project ... What will be the power source for it and the size prop you plan on using ?
The one I ran for the Sheriffs Dept was a 0-540 engine , fuel injected and a 72 inch prop. Darn thing would only drink Av-Gas. Take it out on a patrol and stop at the airport to fuel it up before calling it a night. , Fortunately I did not have to pay for the gas out of my pocket.
A lot of the old timers are sitting on the sidelines now days. There are a few posting and the rest are around and heard from now and then.
I get a email from Crazy old Bear now and then so I know he is upright and still kicking.
Chuck.