Hi David, I will have to make a small video of the system. The pin should not come out even when running on uneven terrain with the machine bouncing a bit. The most important part was for the strap which had to run smoothly and freely out of the bottom buckle (can’t seen on the photo at the base of the frame) as the packs fall off. I am waiting for two more large lipo bags from HobbyKing and will duplicate the set up for 4 Bonka(s). I may need to use a thicker strap though and have a metal buckle instead of strong plastic though. I used a standard velcro strap that comes with most wings and routed it from the back of the frame - I placed a piece of sticky velcro (soft side) at the top of the frame and one at the bottom because of the CF sharp edges - burned two holes in the strap at the right locations and installed two grommets for the pin. I had an old SUPAIR reserve parachute handle, shortened it and stitched a loop at then end. I twisted the reserve parachute handle strap a few times and locked it inside a piece of shrink tubing to consolidate everything Before adding a few pieces of red electric tape on it for the visual. I then inserted a key chain ring through the pin and the handle loop. I took a piece of 2" wide sticky velcro and pressed it down on the left shoulder strap (the first time it was too high) and relocated it lower to make it easier to grab with one hand or two. My handle already had velcro on it so it worked perfectly. The pin is pretty easy to pull out and even better with two hands.