Here is an example of "crowd control".  The top image is a quick PTGui stitch with no masking.

The bottom image is after a whole lot of Photoshop work prior to stitching.  This shows the benefit of shooting more than 1 shot at each position.

These were taken with a Nikon D300, Sigma 8mm f3.5, NN Ultimate R1 and a Manfrotto monopod.

After the images load, drag your mouse around in either the top or bottom panorama.  Both images will follow your mouse movements.