The ideal set up to kill a buff is to get much higher than them, let them get roughly right underneath you, dive to 450knts+, scream by at some odd angle, get 2 or 3 secs of aim time, 1 good second of trigger time, pull of the target and climb to alt again. Classically referred to as 'boom n zoom.'
If I attack buffs without the necessary alt advantage I take a different approach. I will get as much speed as possible (no where near the BnZ/alt-monkey approach) and instead of dive I make a slashing, latitude pass. I will fly even with them though pass from left to right, or right to left. Not as effective though very deadly. If I do it right I hold down the trigger and rake the buff from wingtip to wingtip. With this method it takes more to make the kill for the simple reason I am not concentrating as much lead into one area, such as a wing, etc. The advantage is most tailgunners are going to struggle to get a bead on me and have a very hard time hitting a fighter that is rapidly passing from one side of the screen to the other.
Now imagine I have three fighters at my command. If I do it right one-pass-gets-me-three....One pass and I get to rake the buffs with the firepower of say P-47s? If I get into a good habit I'm pretty sure I can kill two buffs in one pass almost every time (third buff being lower than the two drones.)
I believe I understand the intent, though I still wouldn't support the idea. I have always liked finding a way of creating incentives for sticks to fly in organized activities. Maybe those that join a mission all receive extra perks when a base is taken, or they all hit some buffs.