Im using a HSS Line line this year. Has a prussik knot that I can clip into on the ground and slide up as I climb, then I just leave it attached as I sit in the stand. The line is tied about a foot above my head so I can basically move my harness strap above my head or way down low to shoot.

Other than that you can get a simple tree rope with a prussik knot than you can also manually move up and down the tree itself, but I like being hooked up while climber. Especially with sketchy lock-on ladder sticks.