Keeping the Launch Area Clear

Monday, Labor Day, we had another situation where a non-pilot / spectator refused to remove himself from the launch area after a pilot at launch made the request and two other pilots repeated the same request.
I recognized the spectator as I had to speak with him about 1 month prior to step behind the orange cones while another pilot was launching. He had the same attitude and asked if I was cop, etc.
His beef with this rule is that it is not posted, however there is no real area to post this rule. Even if it was posted, no one would read it anyway. He views this rule as an infringement on his right to use the park, as well.
So, in our rules posted on this website, under item #4 (Monitoring), you'll find where it states our responsibility to keep the launch area clear of spectators. The spectator in question on Monday (and one month prior) wanted to see where this rule was stated. I'll print a copy of the rules and have them in our gear bin by the picnic table. It seems as if this person actually needs to see the rule in writing for it to sink in. Being that this is the 2nd time he has taken a stand at launch with us, he may repeat this event again...I think with some educational efforts on our part aside from calling the Park Police, we can work this out.
Any thoughts?
~Chris
I recognized the spectator as I had to speak with him about 1 month prior to step behind the orange cones while another pilot was launching. He had the same attitude and asked if I was cop, etc.
His beef with this rule is that it is not posted, however there is no real area to post this rule. Even if it was posted, no one would read it anyway. He views this rule as an infringement on his right to use the park, as well.
So, in our rules posted on this website, under item #4 (Monitoring), you'll find where it states our responsibility to keep the launch area clear of spectators. The spectator in question on Monday (and one month prior) wanted to see where this rule was stated. I'll print a copy of the rules and have them in our gear bin by the picnic table. It seems as if this person actually needs to see the rule in writing for it to sink in. Being that this is the 2nd time he has taken a stand at launch with us, he may repeat this event again...I think with some educational efforts on our part aside from calling the Park Police, we can work this out.
Any thoughts?
~Chris