Went super light last year hunting off a mountain bike. On old single shot H&R in original Mossy Oak Bottomland, a water bottle on the bike, seat cushion strapped to the rack, a short box in a holster off the belt, a Hegler trumpet, a scratcher in the shirt pocket and a mouth call. Couple necessity items in the cargo pockets of my pants and away I go. Very mobile.
That's it.
Used to carry a vest that must have weighed 85 pounds. Never put it on last year.