Hey Shane,I know a little about these
As far as materials go heres how I rate them
4) PVC...a lot of boats are PVC,the problem is this material is not as tough as the others and does not handle UV rays very well,prolonged exposer will shorten the life of these rapidly.
3) Hypalon simular to PVC in it's quality,a little heavier than PVC. no real advantage.
2)Bladder systems i.e. Outcast,Aire,these have bladders and zippers,for the average guy these work fine,real heavy compared to other boats.
1) Urethane,the best and most expensive.This material has a puncture resistance almost 10 times that of PVC :shocked:
Only a few manufacturers around,Wing,Sotar,Maravia
Wing uses the best quality of the three,Sotar has gone to a spray-on coated urethane as has Maravia.
Tubes are the basic start,now frames
since I don't want to take up any more space here,Let me say,not to many out there to fit my needs so I started buiding them.
drop me aline and I'll send you in the right direction.......Os