I have a "plug in" whammy bar. How could I achieve the gargle/flick that is possible with Floyd Roses?

I'm pretty sure this is only possible with a floating bridge (one you can pull up as well as push down).

And it's really as simple as it sounds. You just kind of "flick" the whammy bar.
Q: Favourite Pink Floyd song?
A: The one where they get wicked high and play Emin and A for an hour.
Yeah just flick it a bit, too much tension will cause it to sound like a ASDSJAK.