I asked Mark Lentz this question a few weeks ago:
I have a question about the new NFHS weigh-in procedures involving on site weigh-in. My question is are we still using the same hydration procedure and weight loss criteria as before or are we adopting the NFHS weight loss procedure?
Here is his response:
We are not adopting the weight loss procedure. We will still conduct the initial hydration assessment, before an individual can start practice, then for the certification weigh-in, we are working on language for this. This becomes a little more difficult and we do not want to add additional work for a host administrator. We will have something sent out, when finalized.