I just answered this same question on CLC board last night. Cutting and pasting...

The Summer 1991 issue of Sea Kayaker has an article entitled "You can take it with you - Making your kayak a take-apart". It describes turning a fiberglass boat into a 3-piece bolt-together. Sea Kayaker can send you a copy of the article if they don't have any more back-issues.

Good luck, Ross

: I intend to convert my goldeneye into a two-piece so that it can be stored
: and carried on my boat safely (towing two tied either side of a dinghy
: works but not in rough weather and I don't want to add ski-rack type gear
: to the boat). The Goldeneye was built without bulkheads or hatches. My
: current plan is to cut immediately behind the cockpit, put a bulkhead on
: each new end, and connect the two with large diameter bolts/wingnuts. I
: will put a hatch in the aft section to give access to the bulkhead in that
: section and will leave the forward section alone for the time being. Any
: words of experience or advice such as materials and thickness of
: bulkheads, padding between the edges, etc. will be appreciated.