This guide will tell how to get oldschool Alterac Valley and get like 50-200hk in one AV. I have done this few times and it worked like 50% of all times..
So when you enter to AV tell everyone that you need help with defence like "Help me with defence, if we defence Galv then it's easy win." or something like that.. If you get alteast 5 people to defence I'm pretty sure that this will work.. So when the gates will open, just rush as fast as you can to Stonehearth Graveyard and cap it. Try to cap it before any alliance will respawn there or thigs will get little harder.. This is also much easier to do with your friend so he can take all mobs around that flag and you can cap it.
Now you have to defence SH gy and wait that horde has killed Balinda. Now all Alliances will respawn at North and Horde will rush to Norh, so only few alliances will get through Horde players and so small group can't do any progress at South.
Now you have more Horde players at North than Alliance has and you will crush them quite easy. I think that winning rate is something like 70% here if all goes right but if they go wrong I think it's realy had to win..
One match will take something like 20-45mins but it's realy fun and it brings good memories from pre-TBC. And it's realy worth it, you should try it!