This is an extremely tuff and waterproof series of boxes, based on the idea, that you should be able to see the flies in the box, so that you quickly can decide if you got your hand on the right box.
This indicator you should connect between the line (french nymph leader) and the tippet with nymphs. You hold the strike indicator straight above the water. Every little touch, stop or suspicious movement can be a take. A very…