I use a summit climbing stand and it has a padded bar in front. I keep my seat low enough so I can use the rail as a shooting rest. do not rest the barrel it's self on the bar.
You can get an old ski pole and make it into a shooting stick, you will need the large round foot on the ski pole to keeep it from slipping between the slots on the stand.
I also use a ez hanger that I screw into the tree close to me and I use a very heavy duty wire tie ran trough the rear sling swivel to go over the ez hanger hook. this keeps the handgun very handy and I can move it around if needed.