Hi, new to this forum, never ridden a recumbent but have plans to build one in the summer. I'm a bike mechanic by trade and good welder so the mechanicals are no problem but iv'e scratched my head for a long time about the seat? plywood? GRP? rails with a mesh tarp? ive looked on lots of forums, search engines and fleettirkes.com which i think is great, really helpfull. can anyone shed any light on the way i could fit myself for a seat as it were, how do i get the right shape, what is the right shape, what do i make it from i'm building a low down two wheeled recumbent (sorry for lack of technical terms not familiar with recumbents at all) if anyone can offer any advice i'd be very grateful!