depends on the situation, settings, and cover. for me, 90% of the time i will end up 18-22 ft.....here in missouri thats about the hight of where most trees begin to fork. down there in the pines you could go 60ft, but that wont do any good. i don't like to go under 18 unless i have some cover around me.
I'm usually around 20ft + up the tree....however, it will depend on the terrain, where your hunting and where you got good shots.......If your too high you may not be able to get off a good shot, if your too low those wise whitetails might see you before you draw.....so gotta get out there an experiment a little! good luck!
Rather than spend my hard earned pennies on those cool Shoot-N-See targets or even the preprinted targets at sporting goods stores, I save a few bucks for weekend plinking sessions by using paper plates as targets. A 100 count pack of paper plates costs less than a 10 count pack of preprinted targets.
If you are playing with something like a semi auto AK, or building a young shooters confidence with a 22 or shotgun, those big eight inch blanks are perfect for putting holes in all...