Tree stand was the answer for my bear last year. I spent hours and hours in ground blinds and pop up blinds, year after year, and would never see the bear I was trying for. While up in a tree stand at the same location, I see my bear coming, it stops at about 100 yards from the water, circles the entire area at 100 yards out, gets to where it started the circle and did not pick up my scent, then came right in under the tree stand. As it turns out the bear was smelling me in the gound blinds for all those hours.