From a Wave, Facing Couples, or other 4-dancer applicable formation.
From Facing Couples, first Step To A Wave.
Centers Arm Turn 3/4 as Ends move up 1/4 around the center
of the 4-dancer formation.
A Wave or Facing Couples ends in a Wave.  
Notes:
- 
Spin The Top is an Arm Turn 1/2 followed by Fan The Top.
- 
From Facing Couples, Fan The Top is like a Pass The Ocean + Centers Trade.
- 
Everybody can Roll after a Fan The Top.
Spin The Top [Mainstream] (Holman Hudspeth 1964):
 From a Wave or Facing Couples. 
Arm Turn 1/2; Centers Cast Off 3/4 as Ends move up 1/4 around the
center of the 4-dancer formation.  Ends in a Wave
 See also Fan CONCEPT [C3B]