I guess what the cool kids have said about me all these years is true... I am a bad player... and I complain about douchebags that GY camp.
I have always tried to follow the rules that we had back to the day in the 1st 19 twink guild I was in back in Vanilla.
If we're in a game where we dominated the other team, we limited our forward progress to the road below the alliance graveyard. That game the other team an opportunity to either a) sit in the GY and give up or b) buff up to try to come down and fight again or c) go ramp instead.
GY camping used to be frowned upon, but that went away a few years ago. Hell, I remember WOW forum threads accusing players or guilds of GY camping and the guilds would actually deny doing so to save face. That was too long ago, I know..