Hi Ken, My M15 trailer was made by Pacific and I added bunk boards to it. The bunk boards were about $100 and are available at several sources. They come with all the mounting hardware and work quite well. I don't know if they fit all the different trailers made for the M15. I am sure the guide posts others have mentioned also work well and would be less expensive.
Don Olson M15 Phoenix, Az _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
