Ah, pulley math... fun stuff.

I stand corrected, it is as the above mentioned, 1:1 (forgot the tackline wasn't dead ended).

I do feel that in practice the tackline gets out first, essentially dead ending that part of the system, which gives you (and again, I'm probably wrong) a 2:1 for the spin halyard in the last / hardest part of the hoist.

Sorry for the confusion.