I agree entirely.
If you don't have a trusted, experienced person doing the pulling, all bets are off! I work solo quite often and have even used multiple pulleys to route my Maasdam rope puller back to a trunk near where I'm making the felling cut. You never want a 'hot dog' doing the pulling. Usually by rope stretch alone I'm able to get the fell I want. When using a vehicle to pull the cutter always needs in a safe zone as the force is applied.
I would trust you, I believe, but would much prefer to have worked with you for a bit.
As to the O.P., well that is up in the air, pun intended!