So far, this is what I have learned about Cz Nymphing based upon dredging and slinging the Czech Nymph and any other nymph: keep the leader under 9′. Start with one fly, maybe two and at first have about 3′ to 4′ of flyline out of the top guide. This will enable you to stay fishing with a short line but also able to load it easier. As the timing improves then shorten the exposed flyline a few inches until only a couple feet extends beyond the tip of the rod. I find it best to not wade beyond mid thigh. In high sticking in hip deep water, I lose contact with the bottom and it is more taxing to reload and cast. I still find more success in normal flowing water to use fluorocarbon tippets. Some would say it does not matter in such turbulence. But I have come to build increased success using the fluoro. I find I increase my pace and intensity while fishing this way. If I am not prepared to focus to this degree, I am less successful. Obvious, yes. But, the technique does require constant focus, motion and visualization to be successful. I have had success with this technique, of late, whether I use a Czech Nymph or say a Prince Nymph or heavily weighted Renegade, for example. I really do love the aesthetics of the Czech Nymph and prefer it solely upon the looks. But, the superiority of the fly over more conventional patterns is debateable. But, my fuzzy Czech Nymphs have worked great! The pace of Cz nymphing is slightly more intense than swinging a wet fly or steelhead/salmon fly or presenting a drag free drift. It is definitely best to keep your line short and focus right before you. As for fly sizes, I have had success with the bigger size 10/12’s as well as the 14’s. The trout and whitefish seem to hit the bigger fly as readily as a size 16. As for equipment, I have been using a typical floating line (WF) on a 5/6 wt. rod. The rod is  9′ 6″ and the medium action helps the loading and slinging. I am looking forward to warmer weather and more insect activity to see if this increases the rate of success.