How do you rank up fast in Halo 3?

I was a brigadier in halo 3 along time ago, typically ranking up is simple and there are two ways to do it. Earn lots and lots of Exp or gain a strong higher skill. Double Exp is a very effective method of doing this but for the Halo 3 Pro's ranking up comes down to doing well in ranked match making, take an experienced friend into team doubles and completely destroy your opponents this will gain you higher skill.

DO NOT BOOST