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....