In an open space, set out five numbered targets (plastic plates, rocks, whatever). Your buddy calls a number at random, and you have four seconds and one cast to put a fly you're holding in your hand within two feet of that target. Not fast enough, no good. Not close enough, no good. Switch spots/roles until you're both casting on the money. Work on that little exercise long enough, and when Mr. Brown Trout pokes his head up in the river, you'll be comfortable with what you have to do. Your cast doesn't have to be long. Too much time is spent (and people are ultimately intimidated) focusing too much on long, sexy loops. As a priority, your cast it has to be on target, and on time … at 40 feet or less... that's what makes a good caster and a successful angler.