Always. Period. I've never forgot my bow, and I've never forgot my harness. From time to time, during gun season, I've gone to one of my stands that I set up to hunt bow. If I don't have a harness on, I stay on the ground. Usually, if I'm hunting in the morning and going in before dark, I put mine on before I leave home. Picked up an HSS ultra lite a few years ago, and I hardly notice it's there.