The forms are not attached to the strong back. They are free floating. They can slide back and forth on the strong back. The "U" shaped spacer blocks will keep the forms square, parallel, and set at exactly 12 inches apart.
All the forms are floating on the strong back. The bow and stern panels are attached to the strong back with screws. Then the spacer blocks are wedged between all the free floating forms.
It can all be set up or taken apart in a few minutes. That is how this set up differs form the strong back I built for the Guillemot. The Guillemot strong back is built as a unit an can not be taken apart. ( A big mistake on my part ).