Here's a link to the Sidecar Racing Assn. http://www.sidecarracers.com/
It seems sidecar racing is bigger here in Canada than the US. Bigger yet in Britain.
I have quite a few friends that race hacks, I usually pit with them.
If you can get out to see them race, it is DIFFERENT.
I've "monkied" in practice a couple of times. It is not easy.
If any of you make it to the shows in Montreal, Toronto or Ottawa, check out the VRRA and SRA booths. We always have a couple of rigs to show, and to marvel at, AND there are usually some hacks around to answer questions.
Come out and watch them race at Mosport, Shannonville, Mid Ohio, Road America.... check the website for a schedule. The moderns corner faster than a bike.