if you are arriving at the high seat .....in plenty of time to get settled in before expecting any deer, why bugg@r about just unload the rifle close the bolt and hand off to your buddy, or sling over the shoulder, then climb up safelyusing BOTH hands, and only loading the rifle once safely tucked in the high seat and ready to shoot
to many people ask questions about "technicalities" on safety here,,, there is only one way to do it safely,,, unload the rifle,,,, if you miss a shot tough luck,,, get there earlier next time