A fourth option is to do what some worlds have done. Make TS give + to spot and to listen. Then you truly have to be careful who you cast weird around true but it is another option.
So please don't think that I lied for some reason I myself can't come up with now. All a mere misunderstanding from my account, and I do apologize if I caused some grief to others with the ongoing "//don't do it" messages.~Chazzler