We used to use the OR 18 snapper release on the front and a OR 16 on the back but have since changed to the OR 19 on the front and I use the OR 18 snappers on the back just so I make sure we don’t lose a board. I still have two boards set up the old way for just using as inside boards on our setup. I really like the way the boards release and fall back with the OR19 clips.