Indicators & Dry Droppers
Foam Beetle (with loop for dropper) [dry dropper great solution]
Hatches - Understanding Caddis, Mayfly, Midge & Stonefly Hatches
Dry Fly Strike Indicator (doubling your chances) – SwittersB
JOPY Indicator: Super buoyant dry fly for fishing with a weighted nymph.
The Ultimate Dry Dropper Indicator Caddis DRY FLY Pattern // Fly
Indicators and Dry Droppers, Orvis Guide to Fly Fishing
How to Tie & Fish a Heads-Up (Eye to Eye) Fly Fishing Rig - Ascent
Fishing the dry-dropper-dropper rig