: I have begun work on 2 Guillemot designs an Expedition single and a
: Night Heron.
: After cutting both strongbacks to plan lenghth, and layed out the
: forms from the 1st form location at the bow to 1 ft. increments,
: I end up with an odd mesurment at the end of the layout.
: My question is; What to do with the odd space? center in the
: cockpit, or keep it to the stern, somewhere else, or did I do
: something wrong with the end forms?
: Any suggestions appreciated.
: Thanks

Your plan should tell you the length of your strongback, from the plans, ie.. kit drawings or plans. I built a CLC Guillemot L kit which has a subset of Nick plans ie..The kit comes with CNC cut stations. My plan told me to build strongback to length, which i did.. however, the form spacing was not clear on the plans, so I called CLC tech support for clarifications. So this may be your problem.

The solution :
1) build strongback to exact plan length
2) Mark your spacing starting at each bow and stern stations and work towards the center. Measure from the ends every 12 inches. If you are using 1/2 inches forms the center stations by the cockpit will have a 11 inch spacing instead of 12 inches, accounting for the 1/2 inch width of the bow and stern stations at the ends of the strongback.
3) The stations at each end of the strongback will be mounted flush to the end of the strongback for the bow and the stern. This is because your plan should be referenced for the strips to first touch the outbound(bow or stern side) side of the stations.

Hopefully, this helps...

KGreer