The u key is used to spin the model for examination. I
think you could greatly enhance it if you made use of
the arrow keys. Once in Spin mode press the right arrow
key to speed up the rate of spin, the left key to slow
it down. Press the up key to pan the camera up while
spinning, and the down key to pan the camera down. Use
any other key to stop spinning, as you do now. This
would allow for a more thorough examination of the model.