Oh yeah!
and oh, yeah, the Senas worked great on this last trunk, the one most leaning toward the barn which only had been growing on the underside of the trunk only for a long time (top side was long dead), but that was in the past, when that trunk was growing at all. Kind of a horseshoe. Crispy dead, so a right-angle retainer line set from the ground, NO Way I wanted to lean the extension ladder against it to set the rigging. I put the ladder up against a doug-fir so the rigging line was running almost horizontal from the maple to a block to a re-direct to the POW on the truck. This effectively made a "U" shape out of the rigging line.
I had a pull line set up in the dead maple via throwline at the same time as the rigging line. I was careful not to shake and break it when pulling both ropes up. My pull line ran to my last re-direct's anchor strap, through a biner, and back to me.
I tensioned the right-angle line with Erik on the 'right-pedal power' through the Senas, cut up to about 4", and pulled from behind the stump. As soon as it set in motion, I was telling Erik, "PULL, PULL, PULL" as the maple hinge of course broke, and cleared the roof, but scared it. I couldn't have done this with 2 people and hand-held anything. I"ve used speakerphone in my pocket before.
Scared the greenhouse, too. The property owner like how I dropped it just in the space. I told him that scaring things without hurting anything is part of making money at trees.
Like The Gambler said, "You gotta know when to hold them, know when to rope them, know when to walk away from the stump, know when to run. You never make any money, unless your scaring obstacles. There'll be time to recount the tale, when the cuttin's done."