Regards the Tomahawk / low reverse /Argentian backhand, I think it would be good to provide the umpires with a Rule, that on safety grounds a player who is deemed incapable of playing the backhand in a controlled fashion could be punished with a free hit against, if the player persists, a green card, and so on.
In a Badger game one of the youngsters played badly executed and technically flawed, yet hard and high, Tomahawk shots wherever on the pitch. After 3 efforts I blew up against the player and after effort number 4 I expressly told the player that it would be a green card next. The player grumbled strongly, but after the game his coach thanked me relievedly and owned up that the player wouldn’t listen at training on how to do it properly. Such a Rule in the Rule book would help the position of the umpire and safety on the pitch tremendously.