After thinking that I was going to install a square latch type catch to hold the bunk board hatch in place, I chose to go with the round one shown. It's simpler and will work well. Flush installation was a snap. I'll do a post showing the sequence next time I work on this. I am through bolting them so they won't pull out. I do still need to figure out a lift but I think I'll use a short loop of line installed under the butt plate on the hatch.