An alternative to consider -

I quit using these turkey vests years ago in favor of backpacks. I have a couple different sizes depending upon whether I am taking decoys (especially B-mobile) or not and how long I'm staying. I just never liked how those vests had all that stuff hanging down the sides to catch every limb and briar in the woods.

When hunting public ground I may stay out all day, which means I need to pack lunch, snacks, and several bottles of water depending on the temps. Backpacks allow you to take raingear without having to wear it also, and they make a convenient place to put unnessary cloths as the day warms up. Both my backpacks have a small bag of essentials including matches, spare batteries, toilet paper, Trail tape, zip ties, turkey tote parachute cord, compass, and an extra "emergency" diaphram call in-case I leave them in the truck or I somehow loose them in the woods (hasn't happened yet).

Another essential part of my gear is a fanny pack worn in the front (buckle in the back). In this I keep and storemy glass and aluminum pot calls, strikers, gloves, face mask, spare shells, diaphram calls, sandpaper, lens cleaning cloth, and small zip ties to tag the birds feet. Everything is right there in easy reach and I don't have to go fumbling through a bunch of pockets to find what I want.

As far my seat - I used to use a small closed-cell foam pad that I attached to my belt with velcro straps. A couple years ago at the NWTF turkey convention in Nashville I found these guys selling a larger cushion seat that had a nylon webbing strap attached to it. I put my belt through the strap and the cushion is worn on the side. When I want to get up and walk simple pull the webbing up until the cushion is tight to your belt and then the webbing snaps together to hold it there while you walk. To lower it to sit on simply unsnap the snap and it falls right down. Very clever.