What most schools have in common is a student-to-instructor ratio of 3, 4, or 5 to 1. Students in a small group have a chance to rest, stay fresh, and learn by watching the other shooters. (Fieldsport in Traverse City, at 231-933-0767, actually rotates students through four different instructors, including shotgun writer Michael McIntosh.) Expect to fire about 250 rounds in a full day's lesson, much of it on a skeet field or a Sporting Clays or Five-Stand layout. Unless you've brought a featherlight game gun, cumulative recoil normally isn't a problem, since the shooting is spread out over the course of a whole day. Still, it doesn't hurt (literally) to shoot a gas auto.