yes but against an opponent that wont get roped you can be known to climb very high to extend in the vertical. your methods are very good indeed for a real fighter pilot, not an easy scalp to claim. unfortunately you will miss out on the progress made by everyone down in teh mosh pit.
Busting up a 1 on 1 is fair unless you are asked not to, especially if your mate is losing. thats half the fun clearing someones tail in the nick of time.
whats to say someone who gets ganged 3 on 1 in a fight and wins, then flies into a 1 on 1, same sortie still, where the friendly is losing and kills the bad guy isnt justified?
the whole cherry picking thing is null and void unless the friendly pilot asks you to stay out.