PC version and Saitek P880 controller .. dunking help

[laxvty]

I've watched all the tutorials and I can make basic dunks but I cannot figure out how to do the advanced tricks or 360's?

What is the "trick" button on the P880? The dunk controls are not listed in the controller menu.

Do you have to hold the trick button down all the time after the gather or do you just tap it?

Are the analog control sticks used during dunking or is just button combinations and control stick movments?