I know I've seen this thread before but I can't find it.
The first was built by Bounty Enterprises, cold molded, to be used as a plug to make the molds.
Bounty made 3 (or 4?) from the molds.
I corresponded with a couple who built a cold-molded version who replaced the blister coach-roof with a whale-back deck. No engine. They ran aground on Catalina Island and lost her. Must have been a terribly heart breaking experience.
I corresponded with a fellow in England who built a fiberglass model using C-Flex. I think.
Then there was my cold-molded Marco Polo III/Teleport.
So, 7-8 altogether.