I felt the same way as you. I never managed the time that most people post on here. I think it typically took me about 2 days played to get to 60 on my teams. I don't think I ever got a really solid answer on how people did it in 1 day. I think a lot was knowing which quests to do and granting levels [and maybe boosting or just doing instances]. I typically followed a guide as well while skipping all the collection quests. I don't think this is the most efficient when multiboxing, especially with RAF. Also, if you don't have to loot then don't. You won't earn much money from the vanilla wow loot and the time you save adds up.

I never did instances leveling up to 60, but I think it might be worth considering.. Doing instances might be decent XP/hour because you don't actually have to move anywhere - I found that I moved around A LOT while leveling with RAF doing quests.

Also, search the forum I think someone posted a multiboxing friendly guide, at least for the Horde.

Cheers.

edit: Here is a link to some of those posts

Horde and Alliance Multi Boxing RAF 1-60 Leveling Guide
Howto: 1-60 RAF