Designed for small cruisers, runabouts and sailboats with unsual gunwales, where a standard ladder is not practical. the overrail hooks snap into mounting sockets (included) suitable for temporary or permanent mounting.
I installed this ladder on the transom of a fiberglass 1965 Chris Craft Sea Skiff conventional inboard boat. We moor our boat in about 4-5 feet of water and this ladder is used to board the boat at the mooring. What I really liked about it was the simple and effective latch attachments, overall quality of the ladder and the fact once installed correctly it is a stable safe means to board the boat.
There are a few things I would change. I swapped the self tapping latch mounting screws for stainless machine screws with self locking nuts and large stainless fender washers to go under the fiberglass deck to properly back up the mounting screws and improve the reliability of the fastening arrangement. Due to the angle of the transom I had to add about 1-1/2 inches to the length of the folding standoff feet which I attached to the 3rd step of the ladder. This was required to get the ladder to mount perfectly vertically, without the extensions the standoffs were too far from the transom and if you pushed the ladder forward at the bottom to force the standoffs against the transom the ladder was several degrees off vertical and the latches at the top of the ladder were put under severe stress that would have eventually bent the latch plates and worn the ball attachment points on the top of the ladder out or wrecked them. Now the folding perch feet do not fold flat against the ladder step as they are too long to nest together but the ladder works great and the perch folding issue is a minor price to pay for a secure ladder that is correctly mounted perfectly vertically and works right. The bottom step of the ladder hangs in the water when the boat is moored and the aluminum tube did discolor in Lake Michigan's fresh water.
I would like to see Garelick widen the plastic steps a couple of inches and lengthen the folding perch feet 1-1/2 to 2 inches allowing the ladder to be correctly installed perfectly vertically with boats with deeper reverse angles on their transoms. The tubes could easily be shortened with a pipe cutter for more vertical transom situations. I would also like to see this ladder offered with 4 point secure latch attachments and an optional hinged version allowing the ladder to be mounted more securely and allowing the bottom 2 steps to be folded up and out of the water while the ladder is mounted. Another desirable option would be to offer it in a heavy duty stainless steel version. I would also like to see it provided with machine screw attachment for the secure latches, self tapping screws have no place in a mounting attachment system for an otherwise good ladder, there are too many ways self tapping screws can fail under the load of a wet heavy swimmer trying to board the boat.