We make the slider keepers with an elastic band (and 2 peices of 2" velcro, and a small piece of binding tape )that goes around the reserve flap, right up @ the top of the flap. Not too tight, so that in the event that you must cut away once it's stowed, it would pull off of the reserve flap easily, and float away w/ the main. And when the reserve deploys, if in fact the p/c or reserve did catch on the keeper, the keeper would be pulled off of the reserve flap quite easily. I am not a rigger, my husband is and we both really like this way. He has had a # of chops and I have had 2 using the keepers like this and we have never had, or heard of a problem w/ them.