yep, both billy and mike have pattern backgrounds, but mark did not. but billy showed up at morgan hill in 1997 with a plane full of gyros which he was told by the pattern turned IMAC CD that he had to remove in order to fly. billy's choice late friday afternoon was to drive back to az or compete with a newly trimmed airplane without gyros and see what happened. and he won, and not to take anything away from him, but I think there were three or four in Unl and if memory serves me right, Cronkhite was flying something goofy and then a borrowed airplane. and so why is that these guys with the pattern backgrounds come into imac into the higher classes and suddenly start winning against pilots that have come up through the ranks. i watched mike and bill do it, jeff szueber did it...and with the exception of mark l, the top SA pilots have pattern backgrounds and got into SA because of the TOC, not because they had an interest in IMAC.