fruitcakesa
Veteran Member
Mosst people rigging to pull a tree forget that once it starts to fall the pull is gone as the pull vehicle isn't fast enough to keep the slack out of the cable.
True, that's why it's essential to have aimed the tree accurately with proper sized hinge wood and "safety valves" in place, be it wedges, jacks or what have you.
The guy line is just a tensioner for that initial breaking of the hinge at which time, due to your careful pre-falling procedures, the tree falls where aimed.
Of course, with rotten wood, all bets are off.