Fly fishers may have to use ultralight tackle when catching large trout that eat small insects. The 1-, 2-, and 3-weight fly lines reduce line splash, reduce surface disturbance and allow fishers to use shorter leaders. Ultralight tackle does not cast well on windy days
IF YOU FLY FISH FOR TROUT MUCH, YOU EVENTUALLY FACE THE FACT that you operate in a world where bugs call the shots, determining not only where, when, but also how you must fish, and your choice of fly pattern, the length and strength of your leader, and the weight of line and rod you use to deliver them.
Often enough, it’s a pretty straightforward call. Anglers, like most people, tend to play the odds. They choose 4-, 5-, or 6-weight outfits, average “all-around” tackle scaled to the proportions of ordinary circumstance where water, fish, and insects all fall somewhere in that wide swath of the middle ground. But at certain times and places, circumstances cease being ordinary, and you’re faced with one of the most incongruous and fascinating situations in all of the fly fishing–larger fish sipping the tiniest of insects. When this happens, a whole new sense of scale comes into play, for the smallest of bugs require the lightest of tackle: 3-weight outfits, 2-weights, or the ultimate in ultralight fly gear, feathery 1-weight combinations.