I assume you are talking about gun hunting from the ground, I try to set up on the ground with a large tree to lean against and some trees/brush with shooting lanes inbetween me and where the deer should be moving through. Movement and scent are the 2 most crucial things hunting from the ground, you have to have the wind working for you and you can only move when either the deers head is behind something or its head is down feeding. I gun hunt on a fold up camo seat and depending on which way the deer is coming and the cover determines whether I shoot from a seated position or standing, if the deer is coming from a direction that you fell you need to stand or shift your position do it as soon as you can, do not wait for him to get in to close to stand or shift.