Typical windward mark rounding goes something like this (I'm crewing)

1. On Layline, hand mainsheet to skipper
2. Come in off trap (skipper should ease to keep hull flying, but account for crew off wire)
3. Ease jib, windward board up, rotator off, cunningham eased (this should all happen between weather mark and offset)
4. Tack line out
5. Hoist like nothing else matters
6. grab sheet and trim (sometimes skipper will hand you the sheet if they're nice)
7. Kick joyriding skipper off trap if they are still there
8. Hook in, get back in the footstrap, maybe a chicken line
9. send it

I may have forgot something... but that's basically how it goes. The Skipper should also raise the leeward board while you are hoisting, not like they have anything better to do.