Theoretically both leader & follower are supposed to do their own role (just as in other partnerwork situations requiring lead & follow skills) - the guy leading the spins and the follower following the spins. Each provides their own momentum and support/balance, however through interaction some support and/or momentum may be passed to the other partner as required. The more advanced dancer always compensates for the less advanced. This may mean that a more advanced leader will apply more force and momentum into his spin lead to help the follower get around as needed. A more advanced follower may compensate for the lesser leaders lack of control and application of force, either slowing it down, speeding it up to keep on time or just maintaining more groundedness to stabilise the leads poor halo technique. Following in general naturally requires that you stay in synchronisation with your partners lead. You provide most of the momentum for your turning and he guides you and tops you up with additional momentum as required. In spinning this could mean an ideal where you would provide most of the momentum and most of the balance and he supplies a small amount of lead to get you started, guides you through the spin to help you spot/balance and adds a little additional momentum for each turn as necessary (not necessary with really good follower spinners) and signals when you are to slow down and stop. "So I keep hearing different things about this. Are you supposed to spin yourself, or are you supposed to let the guy spin you?" A lot of people use these vague sentences to describe all that complexity going on under the hood and then people wonder why they're confused! When good leading and following come together there is no limit to the number of spins that can be done. Usually I stick to 1 to 4 depending on the girl, the music and situation even though I am capable of much more. For the leader leading below your limit is an important aspect of self-control and more easily guarantees a happy follower.