I want to reinforce what Bill Hamm said.
In the past all the fiberglass canoe producers maintained a shop where all their prospective designs were first built using the strip-building process. Today kayaks are more numerous than canoes because they can be produced cheaply in big numbers using rotomolding. The rotomolding process can produce hull shapes that cannot be easily dupicated in strips. So I don't know if strip-building is the favored way of building one-off test-models. But they certainly have to build test models before they shell out $1500 per foot for a rotomolding mold. And even if you have a mold you have to have a machine worth a couple of hundred thousands of dollars to spin it for the molding process.

: Are you talking about rotomolding? Vacuum forming? What?

: Charlie,

: I am trying to figure all this out. I have all these ideas and
: plans, but looking for a way to get them made. I am not sure the
: different between Rotomolding or Vacuum forming? I figure I have
: to start somewhere?
: Besides the difference of the 2 types what is an inexpensive way to
: make a prototype? Fiberglass? Wood? Heck I would like to use
: something that performs less then the molded types. So many
: questions....