...start the tack, come in and...
I'm too chicken to start a tack while trapped out. I ease the main a little, come in off the wire, and then tack. After completion, I go back out on the other side.
I did once (at Spring Fever a couple years ago) sail into a header so big that it backwinded the jib while I was on the trapeze. That was the fastest tack I ever made, but if the harness hadn't unhooked on the first try... well, I don't want to think about it. I'm sure swimming would have been involved.
Regards,
Eric