However, there are some situations in which a two-fly rig is advantageous in salt water. Seatrout are attracted to noise on the surface. Often a popping bug with a fly hanging below it will outfish a popper alone or a single fly. The trick is to use a weighted fly, such as a Clouser, and cast with an open loop, which will turn over at the end of the cast and reduce tangles. The dangling fly should never be tied longer than 10 inches, or it will tend to catch on the leader on the cast. When you’re fishing for smaller striped bass, a popper or weighted fly is often a killer.