More times than not, I rarely use a "blind"... The biggest thing for me, is a good runway in range, and a comfortable seat. Then, it's just a matter of sitting still!!!
I usually have 3-4 differant spots for morning, evening, wind, thermals, etc. If the wind shifts, I move. If I don't see anything for a while, I move. I see many tree stand hunters climb in their stands, then continue to sit there for hours, after the wind shifts? They're all "settled in" and it's easier then moving I guess.