Bucky - I've killed most of my deer with both bow and gun from the ground. It is WAY more simple than the tree stand mfrs would have you believe.
#1 - wind in your face (or at least not blowing toward the deer's location)
#2 - broken outlines (brush behind you is more important than in front, both is better)
#3 - even less movement than in a tree stand (that's where the biggest advantage is IMO)
#4 - no eye contact with the deer (maybe it's me, but I think they sense that somehow)
#5 - pick a spot (I forgot this one in October!)
#6, 7, 8 - Have fun, gut deer, eat backstraps!