FWIW-
FFA arenas will always have vultchers. Lift from another field and spoil their fun by being absent. Don't even try to kill them, just let them sit there all alone. They will get it sooner or later...
...as to whether I think vultching is honorable, why do you want to know? You have already made up your mind what you think about it, right?

Last time I was in the H2H arenas I was involved in a small tussle near a base. I had a tempest, a 262 and a spit taking turns at me. I got the tempest and the 262, the spit lands a round on me and I reverse (me in a Yak). I had some alt on the spit and managed to use the advantage to land a few rounds in the spit, which immediately fled for the field. I pursued, and he cooperated by flying straight and level. I blasted his butt, and then cast my eyes down on the buffer.
I was being cursed out for vultching! The little boy ran for momma when he was nicked, and apparently typed "landing" and I'd missed it because I was too busy killing him. He whined to the host about me vultching him, cursed at me, then I get the warning from the host not to do it again. "no prob", says I and I left. Way I saw it if he shot at me we are engaged until I break off, not when he decides he's lost the advantage.