Originally Posted by paddlers
The video makes it look ridiculously easy fitting the stringers.
Some SIBs are no doubt easier to assemble than others. One tip that is extremely helpful when installing floorboards and stringers, is to place 2 oars / paddles / poles under the boat (between fabric and ground) running fore/aft (dividing the boat width into 1/3rds to the outsides and between the poles).
Not only does it make your working surface flat and even along the length, but it gives a bit of separation between the floor boards and the ground, making it easier open up the angle between the floor fabric and tube fabric when installing the stringers. It will definitely be easier on finger tips / nails this way.