The December "Aviation Safety" had an article by Aviation Consumer Editor
Paul Bertorelli on this very subject.

Bob Gardner

"Harry Shin" wrote in message
...
Hi Guys,

My father and I were returning to Petaluma (O69), called in on the 45 to
downwind and were just about to turn downwind when a flight of three
experimentals called in that they were set up for their "overhead entry".
They were flying above pattern altitude on the runway heading, proceeded
to
make a diving 180 turn to downwind, inside our line.

Two of them jumped ahead of us, while the third resigned himself to
following our Citabria. I guess we really messed up their spectacular
approach and possible formation landing... (yawn)

So, I'm wondering if their overhead approach to an un-controlled field is
"approved"? Petaluma can get pretty busy on weekends, and I feel their
grandstanding lead to some concern and un-necessary avoidance
manuevering...

Harry Shin
Citabria N5064K, Sonerai I 'a building