When aligning the forms on the strongback, how do i keep the forms vertical (Seen from the side of the kayak, not the end)?
In this article: http://home.earthlink.net/~friendship.kayak/data/12ways.html, Mike Scarborough describes this as the 7th and 8th ways of misalignment
I know how to find the vertical position of the forms (for example with a level), but not how to make the stay there.
I plan to use an external strongback.

Palle Dam, Denmark