Rolling down waders

I was wondering if there is any way I can roll down my chest waders to make them more like hip waders when it gets too warm out. I fish a tail water where the water is pretty cold but the air will be in the 90s. Also if it is possible does it damage the waders.

Separate question what’s the best way to carry two rods to the river? I have OPro’s third arm rod holder that I use because I have a your own nymph rod, but I also always like to carry a separate rod for dry droppers, dry flies and streamers.