Welcome to HH. If your stand has a rail, a 1"x12" board is my favorite rest in a ladder stand. Cut the board long enough that it'll reach across the width of the stand, then the board can be used in any position on the stand. Add a small shoot'n bag or my favorite, a welding glove and it's just like shoot'n from a bench.



In the photo, the board is pictured long ways (front of stand to back of stand) on the right side of me (I'm right handed). With it positioned like this, you forearm is completely rested on the board and your handgun on your rest of choice. It's a simple, cheap, rock solid set-up.