Okay I mis-read your post - ground blinds - the idea I gave you I use in a 'tent type' ground blind.
I also do as nchawkeye suggested. I use a Metal (not aluminum as that broke quick) beach chair. The color really doesn't matter as you can use a can of OD green spray paint and paint the chair. It works
A chair like this allows you to sit places where a tree just does not cut it. You can see my roll up rag blinds and I carry 2.
And a tip for you. Look at my cushion. I use an old gym bag strap clipped to each handle of the cushion. Quick flip and its over your shoulder and out of the way for transport.
JW