I used to use them all the time when fishing blue lines and other small streams but they are getting hard to find. Still have a pair or two of Orvis hippers and picked up a cheap pair from Cabela's but i typically use waist highs now. Was fishing a stream where the water was up a bit past my knees but still had a few inches before it got to the top of the waders where there ws a bit of a gap between my pants anfd waders.was standing still for a bit when I happened to catch some movement-- looked down to see a nice size copperhead swimming between my legs. Immediately thought if he lifts his head an few inches Im in trouble. After he passed through and I started breathing again , I yelled to my fishing buddy "ill be right back" .drive to the closest flyshop and bought some waist highs.

Best,
Steve