My pos has a rotating mast and the boom is attached to it.  And you are right ... They have to be controlled separately.  On mine the mast has stops. And it goes pretty much stop to stop.  I've seen on high end stuff (Moxie comes to mind) they have a set of blocks to position it critically.  But since the cockpit is under mast it's not such a pain.  Fortunately a cruiser wouldn't typically need to adjust it much.

I am under the impression that with a wingmast, you need to rotate the
boom independently of the mast, so that the wing is at a steeper angle
to the wind than the sail. Am I correct in this?

If so, that seems like you could no longer have the boom fixed to the
mast and use the mainsheet to adjust the angle of attack. Wouldn't you
need extra lines to trim the wing seperately from the sail, especially
in light air? If so, that seems like a major disadvantage for a
cruising boat.

Thanks for any help clearing up my confusion.

- Gardner

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