I have my boat up off the trailer and was thinking of replacing the bunk boards, not that they are in horrible shape of anything, but I came across this cool website.  Anyway, I looked at testimonial page and I am seriously thinking about purchasing some, what do you think?  

http://www.ultimatebunkboards.com/catalog.html

Here is a pic.

They look like a plan to me. I am getting started on a reservoir rig and they dont slide too good at all. I bet this will help, cant alway sink the trailer enough, and rollers seem to be mixed on results too.