I like that in tree, especially for even earlier kerf close /support on horizontal trims etc.
.
Tried in top hop type close , but to get hop seems needs speed of slam input, so sometimes went opposite direction an d double kerf, trim rear sides for faster saw/less resistance on finale.
.
Semi truck tire changing spoon fits in kerf of climbing saw back cuts for in tree lever, kinda heavy to always carry tho. Can flex hinge over earlier sometimes , or tilt over heavy chunk onto Humboldt slide for friction and more controlled chunk drops.
.
With our tall palms and then dead, stripped trees down here, this worked very well,
Also doesn't necessitate feeding pull line up to point of thowline
>>so throw line point can be much weaker point, just tool to load pull line lower on strong part of tree.
Simply use throw line to pull rope up, and also to keep Bowline open, sometimes stepping Bowline over small stobs etc. Before allowing Bowline to close tight.
.