I am boatless, so I sail other person's boat. So far I have been very lucky and had good crews and captain. With a proper people skills with a sense of humors, the conflicts can be easy to subside. It is not really come to who is winning. Who cares?
I have never crewed with so many in a boat like yours. With 6 and up, tension must be there. It is really up to the Captain to set the tone of the voyage. Unfortunately, some captains are not as good as others. It is just becasue he saved and saved and eventually got enough money to buy an old boat but without any leadership skills, now he is the Captain. I often use the crewing opportunity as a training course for "seamanship" and "how to deal with difficult people" in work place.
It was very interesting, when I was at last year C1500 in Hampton. We were sitting in the cockpit with my new Captain and crew mates, We overheard one fellow sailor speaking on his cell referring his captain as Captain douchebag. We were all LOL'd as he walked away.
Because of the delay the departure, we had more parties. I heard so many horror stories about bad crews and captains. It came to realize that how luck I was and we were. We had a great voyage through 11 days. Anyone would have no ideas that we just met a few days ago.
I find this works well in every situation:
1. Before you come up to cockpit, ask anyone needs anything from below. If you going galley , pick up all empty cups or bottles
2. If other cooks, you should do the dishes and clean up
3. If someone pays the tab, next time it is your turn
4. If someone pick up after you, don't do it again.
5. If the head is smelly, clean it
6. In rough sea, check on each others and offer help
7. No reason to be manly, take you motion sickness med.
8. Tethering so other don't have to risk their live to save you.
I am sure there are more