I have been cleaning out and cleaning up my gear in anticipation of the spring season. I use a San Juan pack from Fishpond and was flabbergasted by the amount of stuff I accumulated in there. Most of my jaunts are a couple of hours at most and there is no way I can use half of what was in there.

besides flies, tippet, floatant and nippers...is there anything else that is really necessary to carry?