If you can avoid going through an official border crossing by just going to play golf, and then heading into the other country afterwards, or even just after driving into the parking lot, then there basically is no border security.
My fiancee lives in Canada, and I cross the border on a very regular basis. While I would love for it to be even easier for me to cross (not that it is at all difficult now) I do understand that border security is important.
Seems to me there are an many laws being ignored as inconvenient.
If the powers that be want to enforce this law, lets put their feet to fire and have them enforce all laws.
BTW I am neither picking nits with you, nor criticizing your position.
You have issues.