I just don't get how some are against these types of rules. When in the world would you find time, and the energy, to do both? From mid March to mid May we play 50 games, and that's varsity alone. Non-game days, we're practicing 2-3 hours. I love ball probably more than most, but I couldn't imagine running our HS schedule and a travel at the same time.
Here in WA they are not allowed to play in more than 20 games of regular season HS ball. If a player does, they are ineligible for the district and state tournaments.
If it were up to me, I would tell the tournament ball players to forget about HS ball and run track instead. At least that way you know their HS coach isn't going to mess up what you spent the last 6 months working on. Plus, they work on their speed and endurance.