There are times, usually when fighting multiple cons, that HOing might be considered a good option. The HO was used in ww2, fortunately we are playing a game. Generally speaking, the HO is probably a good tactic for someone who knows nothing better. Overall, it is a poor tactic, in that if you are flying against someone who knows even a little about ACM, you will loose any advantage. Not that HOing is an advantage for anyone, both planes will have a chance to shoot you down. Personally, I would rather work to a position that allows the other guy no shot, and me a shot. Most people who rely on the HO are noobs or people who don't see/can't realize the disadvantages of it...in that if they fight, they don't know how to win, and are unwilling to learn.
That said, feel free to HO me, while your attempting to HO me, I'll be using my time more effectively.