if u are going to use a caller .don't just stick a scrap of paper with the maneuvers on it in someones hand and expect all to go well . u need to be a well oiled team.pick a buddy that u fly with before your flight get together and work out where u want him to sit and when u want him to call the next maneuver ,he should be getting ready to give u the next as u are finishing up the one u are doing and so on than u can concentrate on the flying,hope this Helps RAD