If you are talking about fiberglass resin, it really isnt the new unheard of thing out there. It is also messy, toxic (hardner), and somewhat difficult to do and can be expensive if you buy quality products (West Systems, uni directional weave, carbon fibre, etc). Unless you use cloth (glass or carbon fiber mat or weave) it is super brittle (basically worthless esp. But, if you are willing to take some time and learn to work with it it makes building stuff much easier. I got used to working with it in the boating world, starting with just repairs and moving on to molds and just laying up from scratch. I have done lots of windsurfing parts (boards and skegs) as well as fitting body kits and the like. Needless to say you save money in the long run, esp if you are willing to do work for others. If you want to learn how to work it the best thing is to go get a book and some cheap resin from lowes or home depot and some glass cloth and start working on making stuff. It takes a bit but its not rocket science. Best o luck.