Whitlock's TelStrike Indicators
These allow strike detection of a nymph or micro-jig faster and more accurately than any other design on the market. They are durable and trouble-free, cast smoothly, land on the water softly, and stand up when the fly has reached its maximum depth. The Telestrike "flag" visually telegraphs every move the fly makes and alerts the fly fisher 1/2 to 1 second faster than any other popular plastic or yarn indicators. You can hook more and larger fish when using them.