I was watching this video, where the speaker got to more practical things about spiritual techniques and spinning in particular
http://www.youtube.com/watch?v=oEO8tBsm_lU
She says that
you need to spin with your vision focus on [some word sun or thumb or...]
This is around minute 6 (cannot say more precise because this video cannot be scrolled in time line, just by jumps).
If anyone knows what she it talking about or can hear the word, please share this with me, because it is important for me.