When Children Hit

Question:

Hello. I have two of your books and neither quite addresses our issue. On the topic of hitting you say: “When your preschooler hits you, decide what you will do instead of trying to control your child. Let her know that every time she hits you, you will leave the room until she is ready to treat you respectfully. After you have told her this once, follow through without any words. Leave immediately”. The thing is, if I try to do this, my son chases me (and his dad) out of the room, hitting all the while. I cannot leave without him hot on my heels. If I remove him (pick him up), he is kicking and screaming and will only stay somewhere if I lock him in. How do I approach this? Thank you for your time. Caroline