Phat showed me a great article (which I've misplaced) from Backpacking Light explaining the PCT method.

While I've found that to be too much to bother with on the EAST coast, the way the article showed to get the line up the tree was priceless.

Rather than tie a rock or a stick to your rope, clip your rope to a stuff sack, put a baseball to softball sized rock in the stuff sack, and hurl the rock over the tree limb in question.

Helps to put a loop in the other end of the rope (that I put around my wrist).

To a proficient PCT hang user: how do you get the bag more than 8 feet up in the air? I got confused by this when I tried to put the article into practice, and it's the big reason I went back to tying my bags off to adjacent trees.