If you have read the 2019 NFHS Baseball Rules Interpretations, you have undoubtedly read #12, concerning the legality of a bat with an embedded chip. It contradicts what you heard from us and possibly passed on to your membership.
After a talk with Hopkins this morning, it seems that a sharp interpreter found Rule 1-3-2(a)3, which states that, 'Materials inside the bat or devices used to alter the bat specifications and/or enhance performance are prohibited and render the bat illegal.'
Therefore, the Marucci bat that was mentioned, is illegal, at least for the 2019 season.
Still thinking strikes,
Ron & Andy