Not exactly the way I did it, but close enough. Works well for getting that last little bit of adj. for perfect alignment.

> Nick and I used to use a good quality 2x4 forthe strongback. One time when
> building the second boat off a form the form was slightly curved. I
> drilled two sets of holes on each form on the convex side. I then strung
> two strings, Starting on the stem forms, though the holes alternating each
> string from the inside hole on one form to the outside of the next
> (opposite for the second sting) to make a criss-cross pattern. when the
> strings were pulled tight, the entire strong back could be pulled straight
> again. Doing this on boath sides will stiffen the form and make it
> adjustable.