The floor of your inflatable boat most likely has a dedicated air chamber and therefore it likely will be possible to measure the size of the floor by finding the seam for the floor chamber.
How to make a wood floor for an inflatable boat.
Insert aluminum stringers between boat tubes and floor sections.
Once you ve got the ideal shape then make one out of the marine plywood.
Consider making an interim template out of something stiffer than cardboard in order to refine the fit.
It would be easier to do if oar or paddle will be placed between ground and boat bottom such way that to lift edge of board off the ground.
When you do this you ll need to reduce the total length of the floor if you ll be using jointing strips in between the pieces since the strips add a bit of length to the entire floor.
Even the lower cost smaller inflatables at westmarine sell for over a thousand and go up.
The basic premise to build a strong inexpensive inflatable boat.
My basic plan is to use some heavy canvas and impregnate it with something to make it air tight.
If you look at the zodiacs you ll see they run into the thousands of dollars.
Whichever way you choose to make your inflatable floor with baffles or by sealing the floor pieces together in strips you will need to heat seal a perimeter 2 3 cm wide around the inflatable part of the floor so it will hold air if you are making the inflatable floor before your tubes are finished remember to leave at least 5 cm around the.
It is best to split the final plywood cutout into 2 or 3 pieces so you minimize storage space and make sure everything fits into your trunk.
Make sure that floor will flatten by spreading inside the boat.
I cut mine into 2 pieces.