Basically what the title is, spam the Local Defense channel! Not sure if this would work, but it probably can. You're going to need some horde friends along with some alliance friends, the more the better.
Each time the tower in EPL/HP is taken, it says <NAME OF TOWER> Was taken by <Faction>. Now, if you had some friends on both factions, you could have one faction take it, leave instantly, and your friends of the other faction make it nuetral ASAP, then retake the tower with the same faction. The more people the quicker it can be done, and at more towers.
I'm not sure if this is a repost. I tried searching, but it just gave me a database error!
note: Wasn't to sure where to put this theory, it doesn't really have any set forum to go in, or does it?