Simulate: Camera handheld simulation

I've just purchased Simulate: Camera in order to approximate a handheld look on certain still images.

I'm having a lot of trouble taming the controls to simply look like the human movements of trying to hold a camera steady. It's easy to achieve whacked-out earthquake effects, someone's-blowing-up-the-starship effects, holy-cow-I'm-having-a-seizure effects, but not the most ordinary handheld feel.

The documentation refers to there being presets, but the only four I can find are all wild and crazy epilepsy-inducing presets. The online documentation does not detail (or even mention) the function of all the sliders (amplitude, etc.).

I've tried a zillion combinations already, but can't come up with anything real-looking. Should I demand a refund, or has someone figured out some magic numbers for this?

I ended up playing with it more, and can offer these numbers for a realistic but somewhat frantic handheld look:

Amplitude: 0.2
Frequency: 0.03
(I didn't use motion blur for this one)
Zoom To Fit (checked)
Mix: 100

I used it again for a shot where I need to have a still image look like the cameraperson was struggling with a long zoom:

Amplitude: 0.1
All other settings the same.