i suppose i should also add that my feelings about the added stress on the tailboom are just that... they are my gut feelings. it may not cause any more stress than what is seen in normal flight, i just personally dont feel comfortable applying those inputs on the pedals. i feel i can control the main rotor much more safely. in the end, these techniques are really only used when i need the rotor stopped quickly or when the wind makes them want to spin forever. im generally not in enough hurry to bother with these techniques.