Of course every situation is different. We used to have 3 guys. 2 of us could fish during the week a lot. The third met up on weekends. My boat was used. We never got into money, but talked about it. A little winnings would go to the boat and the guys present. Bigger winnings would go toward the boat, (gas,launch,etc), probably set some aside for future tournaments, the guys present would split the lions share, and the 3rd if not there would get enough to cover his entry fee and a bit more. Eg: win $2500, 3rd guy out would probably get $300. Even friends should solidify this topic, and especially not so close friends that fish with you. It turns into more of a business arrangement.