That would scare the hell out of me! Friday, Brother and I took down a dead yard pine. I had to climb up (12'!) with a ladder and then through the branches (like I use to do as a kid), to top the tree. Had a rope tied off higher and Brother was on the line. Side shoot branch lost a chunk of branch the hit my head (ouch!) and the main top went over.
The side shoot branch (12" dia) was a little more of a problem. Tied off and notched it, but it started to go backwards towards the street, trapping the saw. With both of us pulling managed to pull it over where we wanted it.
The tree was only 18-20" DBH but we tied off a rope to drop the main trunk since it was right next to the street. My face cut was angled down hill so I matched the second cut. Came down without a problem.
Man, I'm glad I don't do that for a living!
Burned the brush early Sat before the breeze kicked in.