I have a Kifaru Hellcat--not too unlike a Bison Gear pack with shoulder harness straps. Got my Waldrop seat well into the season and will not really use it until Spring Turkey or next fall, maybe some fishing in the summer. Anyways, my plan is to remove the seat shoulder straps and belt and use some extra webbing straps and buckles that I already have and attach the seat to the back of the existing harness system. Will likely need some straps, cord, or bungee to stabilize the bottom area of the seat to the pack. The pack will stick out behind the pouch a little bit but should be secured solid while on the move. Get to hunting spot--unbuckle seat--get set up. I'd rather have my pack at hand to reach items I might want with minimal movement than having to reach around to the back of the seat to feel around for wanted items. Perhaps when I have everything set up I'll remember to take a photo and post for people to see. Not in a position to do that for sometime time though.