Yeah the Coos Bay works wonders, but there are a few things about it and the trees you use the cut on that you should always remember.
Number one, the Coos Bay is a release cut only. There is no directional control with it.
Two, a well balanced head lean is what you want. If the tree has side favor to the angle the cut is executed it is going to twist or tear cockeyed off the stump. But for subtle side favor,, saw that side up first and stick a wedge in it to keep the cut open.
Saw at least a third in on each side. Leave a tapered aspect of holding wood. More wood on the tension side. Do not saw through the support wood or you will get stuck. It is usually best to sever the tension wood immediately upon completion of the second side cut. Easy to do with small stems anyway.
A sound stump is a must, or again you will get stuck, and or the tree will split, twist or tear cockeyed off the stump.
Last but not the least, even if all the criteria is met and everything is done right, you still have to always remember that the primary purpose of the Coos Bay is to "trip heavy head leaners." And the trunk of a heavy head leaner bears tremendous tension and pressure forces. And anytime you deal with high tension and pressure forces something terrible can go wrong. It's the nature of the beast. So you should be cautious every step of the way and ensure that you have a way to safety. always
Other than that everything should go hunky dory.