Eight 2" 1/4" /20 carriage bolts, 4 short lengths of 1x2 and
two side pieces of 1x3 & 4 clamps, and there you have it. You can
adjust the width at the sheer, the chine and the flare angle.
I made two so one could be used to simulate the transom. Computer
images and paper models are nice, but when it comes right down to seeing
if your materials want to take the particular bend you're requiring of them -
nothing beats playing in full sized 3 dimensions.