There is a way to rig it so that it sits about ~6" lower than what the direction call for. Its not complicated but hard to describe. I can take some photos and post if you think it might help. They'll do a lot better job of explaning what we did.
My hunting buddy is about 6'4" and his head sticks up a bit. I just remind him to keep his head down. I sit on a float cushion and my eyes are just about even with the top of the blind.
I've been pleased. Its seems the grass on the edges wears a little more, but that's to be expected. We buy a couple extra sheets of grass every year and dkind of rotate the edges. The grass is a little light for some of the stuff we hunt in but it also blends in well millet, sorghum, corn, milo and I would think rice among others.
Rest in peace my friend... Mocha- Jan 20th, 2001-Feb 1st, 2009.