1st in answer to your question about educating parents--the answer is yes, we inform them and if we see them in violation, we stop them immediately too.
All that slide show says is that video recording is authorized, but then it goes on to state that it communication with wrestlers using electronic devices is permissible during injury and blood time and can never be shared with an official. It says nothing in reference to KSHSAA rule 1.M and it is very vague. I am not sure what you could share in that short of a period of time anyway.
Here is the KSHSAA Rule:
1.M Filming or Video Taping Matches

Any filming or video taping for the purpose of review during competition is prohibited. This includes multiple day tournaments. Video taping and camera filming are considered one and the same and can only occur when there is
competition between your wrestler and an opponent. Again, taping and filming cannot take place when you do not have a wrestler involved at that time. The only exception would be the state consolation and championship finals where
video taping and camera filming of any match is permissible.

Furthermore, whether you like the rule or not, it is still a rule. I posted on this a couple of years ago and you knew the rule then too and did not wish to follow it. This is what Mr. Cokeley told me in December of 2010 on this forum: "The rule is basically unknown to most and unenforceable. How many cameras are in the gym during the finals? How many cell phones with video capability? This rule is being violated EVERY weekend. I have said it before and I will say it again, I will post all matches I have on tape and I hope that everyone reviews them because it will raise the level of ability across the board. Coaches that don't want to abolish this rule must be too lazy to use tape to analyze matches."

My response then included the following: "What is lost here is that you can review tape, there is just procedure as to when you are reviewing the tape of your wrestlers' matches. I still stand by the fact that we cannot teach our kids to disregard rules because we don't like them."

Suffice it to say that until Mr. Lentz tells us this is not the case, it is a rule. If you want to disregard the rules, then you have free will to do what you feel is best. We are required to take the rules test and that includes the NFHS rules and the KSHSAA wrestling manual. And, I read them both in their entirety. Lazy is not in my vocabulary and posting emphatically does not make you right.