I'd send back a letter saying if a tow truck driver set one foot on my property he would get a warning followed by the potential use of lethal force, followed by a call to 911 to have them send a coroner. But I live in TX and shooting people who set foot on your property with intent to commit a crime (stealing a car for example) has legal precedent.
Heck, some guy shot some burglars in his neighbors yard and the judge/jury decided it was a legal shooting
You'd lose in court. There is a mountain of precedent with respect to HOAs enforcing the CC&Rs legally. I know a woman who was evicted by the Sherriff after her HOA foreclosed on her home from not paying her HOA dues. Her Mom had gotten extremely ill just after she was divorced, and she used the money to pay hospital bills and such. Not saying I agree that Nazi HOA types (we all know them) should have that power, but they do. Basically, without that legal authority, all the good things that HOAs were intended for would be unenforceable.
My guidance would be to read the CC&Rs very carefully before you decide to buy a property, because if there's a clause you don't like the sound of, don't buy the property.