Here again, at least with casts that tend toward the extremes of effectiveness, it doesn't take a trained observer to judge how successful the effort was. A big, fat, wide loop simply doesn't look good. It's not aerodynamic, it doesn't travel efficiently, and often the angler making the cast looks like he's working way too hard for the end result. Conversely, a narrow loop with parallel halves that are close to one another, with a pointed, arrow-shaped nose, moves in a much more streamlined path. It will normally travel farther and faster and be appealing to most people's aesthetic sense. Simon Gawesworth, one of the world's most renowned casters, with both single- and double-handed rods, goes so far as to characterize narrow loops as sexy. Tight loops, or perfect loops, as they are referred to, is what all fly-casters seek. You might say these are their holy grail. These are the ones photographed for and illustrated in fly-fishing books, magazines and brochures. Some of my casting-fanatic friends sign off their e-mails and letters with "tight loops," and achieving these is the objective all casting instructors make us strive for. However, as I'll point out at the end of this piece, tight loops are not always the answer to what you're trying to accomplish.