I just roll up my packable raincoat and put it in the back of my waders. The wader belt and lumbar pack keep it from sliding down. I also carry my two bottles of water there. That, plus the lumbar pack, take all the weight off my shoulders from a vest or chest pack and I feel much better at the end of the day. Also when I need to carry extra stuff I use a back pack, with most of the weight resting on the lumbar pack when the lumbar pack compartments are swiveled behind me. The only problem with the back pack is I feel the need to fill it up, don't ask me why.