I have to say, thus far, our good experiences have FAR outweighed the bad, which is very very good for us as our kids LOVE the park, we don't have a yard for them, and I know many on the forum no longer take their basenjis to the park because of such experiences.
Our local parks do have very similar rules including 1) No leashed dogs (in the instance of the incident earlier this week with the leashed dog's owner kicking Booger) 2) No females in heat 3) No more than 3 dogs per person (the woman today had 4 & had NO IDEA what they were up to! And one was a puppy that could not have been more than 10 weeks old.
It would be nice if we had park rangers to monitor the stupid behavior, but it would be even nicer if ignorant people just wouldn't come to the park at all.
And we also watch ours like hawks, and they keep in sight of us at all times. Booger is actually the type that if he thinks we're NOT watching him, he'll run up to us & "check in"