Again, please, don't enter in anything too personal.
I would like to raise one debate in a simple manner. What are all the tricks to shoot the nadir ?
There's a lot of tricks depending on the setup, hardware, camera, and the quality you want to achieve. If you use photosynth, obviously the trick is just to look at the nadir without your feet inside the view and that's it. But that's not the real answer.
Personally, I like much the nadir adapter from nodal ninja. 2 pictures from the nadir ( one with tripod on one side, the second with tripod on the other side and done. No photoshoping needed to patch ).
With motorized head, no real solution as the L bracket is never motorized to return the head. Even if it was possible, the viewpoint would change. No real solutions yet.
Freehand is also possible. I tend to use this way of patching more and more because I'm lazy
It works but for casual photography, not for professional work.
Patching with real images in photoshop is always a solution, but takes time. I prefer to have the panorama done in Autopano. You should need photoshop only for color grading, sharpen, or such operation, but not for retouching.
So my question : what are your tricks to shoot so that the stitch is perfect for the nadir ?