Ive been arrowing deer all my LIFE with seat at 8ft. (Mostly I hunt on the ground anyway.)
8ft. may not be high enough for your situation. Try it for a few days, if its not working out for you, back out and wait a week.--than go higher. If it were me Id be inclined to just figure out where there coming from and set up at another spot--likely theres a place with in 100yds, thats just as good, that does not require this high altitude hunting.--which creates such severe shooting angles,--fish in the barrel effective, definitly dimishes the whole experience anyway.IMO