I am glad to hear that you all are interested in IMAC! If you have not already done so, go to
International Miniature Aerobatic Club - IMAC > Home and find the "how to trim your plane" article by Peter Goldsmith. Once you get your plane(s) trimmed as per the article, then you can concentrate on the geometry of the manuever! For someone like Chip Hyde it only takes an afternoon and 5 gals to get a perfectly trimmed plane, but for us mere mortal folks it takes a lot longer!! But, once you get your plane trimmed you will find that it is a much easier plane to fly!!
Good luck.
Bobby