Carl,
Not sure if it helps, but I level the bow and clamp it in the tree notch with a C-clamp, then bend it. However, I am very new, and trying to feel my way slowly. But the main advice is "Don't pull over your target weight, regardless! Period. When all else faills, don't pull over your target weight! And keep an eye on the bends in your limbs.
Hawkdancer