The link is a great site with lotsa info and cool pics.
http://www.arborquest.org/
I'm in NW Oregon. We've got some damned big cedars and firs on our land that are begging to be conquered.
It's always best to have a buddy on hand so that when you take a fall and end up with the rope around your neck someone is there to point, laugh, and take pics to use at your memorial service.
Bonus points if you have a compound bow to set throw lines in taller trees.

