I used to do a bit of clear water stalking for rainbows and the best fly for me can be tied without any real fly tying equipment. Take a size 14 B175, put a dab of superglue on the hook, wind fine lead wire from just round the bend to the eye and then back to the start of the bend, make a head of olive tying silk and then varnish the whole fly. It also works very well fished 'blind' as a weighted buzzer.