Bluewater Cats: Your rules for going forward?

[AZUS]

Hi, fellow catamaran cruising couples.

I'm curious, what have you developed over time as your rules for wearing PFD's, and for using tethers when doing multi-day passages? Does it change when it's just the two of you vs. having multiple people on board?

Also, have you developed a preferred watch schedule for extended passages?

I'm looking for actual cruisers who have come to their own conclusions to relate their own practices, not theoreticians laying down the Holy Writ for the rest of us, pleae!