These guys are in gig harbor.

http://www.driftboattrailers.com/Custom-Rollers.html


And I found this on a wooden drift boat forum:


Reply by chris towles on October 28, 2010 at 3:51pm

not to try and cut your business or advertising budget or anything... but for dirtbags like me, a cheap diy roller can be made with some 3/4" pipe and 1 1/4" pvc over the top. stole the idea from my roomates raft trailer and it has worked like a charm all season...cost me $12 at ace.