well I dont know whats so different about your neck of the woods, we have had the same issue with a low flying pilot regularly buzzing our registered field, and both he and the club filed reports, the end result being he got severely reprimanded, which stopped him for some months. He started doing it again and the club filed another report which resulted in sid pilot losing his commercial licence. The bottom line is still that these fools should NOT be flying below regulation minimums whether they be 500ft or 2000ft. with the advances we have now with our planes running upward of 500cc motors and 100cc being relatively common its only a matter of time before an incident occurs, and then its no point in saying 'the rc pilot should have dived out of the way'. Another point to be made is that all registered fields and some parks are actully listed on navigation maps and therefore a pilot buzzing a field can only be described as a deliberate act. To be blunt it would be tragic if an incident did occur, but I'd be siding with the rc'er every step of the way. I see these low flying fools as no different to the fools you see daily on the roads, and that you pray that when they wipeout they dont take any innocents with them