From what little I know is that if a co-angler signs up with a boater for all five tournaments or if boater signs up with co-angler either way, then they are both promised to fish all five tournaments. There is always more boaters than co-anglers (I think) so someone might not get to fish if they just walk up to each tournament. Like I said I have never fished the BFL but am looking into it, Im just going by what Ive heard. Someone correct me if Im wrong or if theres anything to add.