In the wildcat and Midwest you pick you partner(so wife, father mother son daughter, or brother anyone or you can fish alone is fine). And you and you partners weight ( best 5 fish) is combined as a boat not as an individual..
in the BFL and BASS weekend series you name is randomly drawn to either be put with a boater or a co angler. And your weight are totally your own so what you catch is yours and what they catch is theres( best 5 fish)
I hope this helps. If you have anymore questions let me know...