Here is a pic of the Boat Buddy device top and bottom. The 2 bottom shots show the pin in the locked and open positions. Note in the last pic the lever on the pin is in the slot with the locking tab, that is the position that keeps the pin locked open for trailering and launching. I never trailer the boat with the pin engaged, that is what the winch strap is for and that will take the shock, not the pin.
Also notice in the top photo how nice and wide the ears are for guiding the bow eye into the locking chamber, and also how the bumper is molded to the shape of the bow, very nice.