Best suggestion I've read so far is to find a guild that is recruiting people for raiding, and tell them, "Hey, I can bring between 1-5 DPSers to a raid to help you fill up the team. They'll all be on time, they'll all stay the duration, and they'll all be very well coordinated".

Better yet if you already have experience and can help people navigate the gimmicks/tricks to a given raid instance.

Alternatively, you can be the GM. Or perhaps butter up the GM by having him on your Arena team (all multi-boxers have 5v5 arena teams with 2000 ratings, right?!).