I can't remember wading in water high enough to need chest waders, but that's what I have used for decades. My present waders have developed multiple leaks, and I'm considering replacing them with waist high waders. I expect they would be cooler and less cumbersome. Having recently become eligible for Medicare, I don't plan on wading much deeper than my knees, but then... Are chest waders necessary? What are the advantages and disadvantages of waist high waders? Please comment freely.