I know ya said you looked at lok-ons and that's all I use now other than a ground blind late season snow/snowstorms. My Millennium M7 is super lite and I also have the M50 for all day sits. They have a bracket mounting system so I keep a few trees with the mounts installed to be mobile and I use an XOP Holiday harness to be able to shoot backside as if wearing a saddle. I also have climbing sticks or ladders on the presets so I only need one step with a 2 step aider to be in business. If I was getting another climber it would probably be a lone wolf or similar BUT, I prefer to face the tree with a gun.