RE: Difference between IMAC and Pattern
I noticed some friggin' sweet maneuvers being flown at the Worlds this year. I don't think that two-turn rolling vertical S's are in the IMAC catalog of maneuvers...If Pattern/FAI contests were more common, and more local, I'd be up for it.
2008 will be my first year in IMAC, though, and I expect to have fun with it, too.