Don't do them unless you have the advantage, a good tactic is rope and dope, you're on top, B&Z and make the enmy thing he can catch you, on top, you hammerhead and come down on him, if it's a perfect rope and dope he will be in the middle of his stall and/or spinning, thus you will have an easy shot on him. The HO thing you're talking about is when the guy beloow still has got E thus it's a HO, more dangerous for the guy on top but still he's the one most likely to win.
Don't HO is my advice, let the guy trying to rope you keep trying, dive away, turen, but don't let him drag you up and blow all your E.
