Bunks, Gudies and Rails from ShoreMaster will only work on ShoreMaster boat lifts. Bunks are probably one of the essential parts of your boat lift. Without them, you wouldn’t be able to lift your boat out of the water—that’s because the bunk is the part of the lift that the watercraft sits on when being loaded and lifted. They’re not sold with the lift, but this is a good thing because there are many options out on the market depending on what kind of boat you have. After all, each type of boat has unique needs.