OK This is my first post in the new Air Boat section....
I built this boat from a picture, on another web site, I ran across while looking for air boats
I found , at [link]http://martysrcboats.com/Pix/billside/jpg[/link] , an started to scratch build
one like it,
I cut all the rib sections out , then Glued the bottom on , I then added foam around the edges, for flotation, added the rudder blade brackets , Cut out the rudder blades, installed them to the brackets, Cut out the motor mounts, installed them for fit, put the Motor on the mounts.
Then Glued the top on , I used 5oz glass cloth and poly resin to seal it. started installing servos in the radio box, and put the primer paint on..
I still have a lot to finish , Paint , Radio, and a Starter that will start a 31cc Ryobi...
Looks like it may be 20# to 25# weight..
Good luck with your air boat project...