In years not so passed, the manufacturers would literally buy a boat and spray it with mold release and make a mold from it, change a few little things and call it there own, happened a lot. So the term "splash" comes from the resin going onto a hull.
Its illegal to do, but still somewhat goes on, another thing that would happen is the origional molds would get sold when they have met there useful life span and they would fix them up and start building boats again.
Tahiti, Carribean, Kona, Shuster, were all somewhat related, so was beachcraft and reinell, not to mention hundreds of others, in fact Carrera used the same gelcoat guys as Eliminator...happens all of the time...
GT
PS sorry if I offended anyone, sometimes this is a touchy subject.