Guide to fly fishing strike indicators and their best uses | Hatch Magazine – Fly Fishing, etc.

The modern indicator has become ubiquitous. Despite that technical-sounding name, let’s face the facts, an indicator is little more than a bobber. You can call it an indicator, a flotation device, or a nymph suspender. Hell, you can call it Suzanne for all I care. But, in the end, it’s just a bobber—just like the one you had on the Barbie pole that you took fishing for bluegills when you were six. Not that there’s anything wrong with that, let’s just be honest with ourselves.
— Read on www.hatchmag.com/articles/know-your-indicator/7714320

This article covers the pros and cons of various strike indicators. Excellent resource for improving Grand River fishing success.