I looked at a few manufactures of marine railways
and their design and realized that for a fraction of the price I could make my own. I used 3" x 1 5/8" steel for rails and 2" angle for cross bracing. I used the Mastecraft trailer to make the bunk layout. After I welded all the sections of track, supports, and the trolly, for a cost of $700 I took it to Toronto and had a company "hot dip" (galvanize) all of it, another $700.....$1400 total cost! as opposed to $4500~ $6000 to buy. I've been using it for 6 yrs. no problem...should I go into business making them???