I just ran across this link, I thought I was the only one that does this stuff!!!
My favorite way is to go low and slow, inverted, and make the bird do a harrier fly-by.
My first plane that I used for this maneuver was my Sig Fazer.
The one I am working with now is my Morris Hobbies Top Cap.
I love it when all of the older pilots at the field take bets on how soon I'm going to plant my Cap. Sometimes I wonder too!!

See ya,
kenny