Unfortunately, I don't believe EA ever intended this to work the way we all expected it to.
I preordered this game and with the preorder came bonuses. One of them automatically increased my golfer to Level 14. So, because of that, I played a bunch of games as my wife's created character just to try and catch her up before we played together. This was before we all realized such a thing is not possible.
Anyway, while playing as her, I was unlocking course mastery bonuses on Augusta. I figured, that's cool, she'll have those done and then when I play, I can unlock them as well for my golfer. Silly me for assuming EA designed this properly. No, when I switched to my golfer, the course masteries that were unlocked under her golfer were also unlocked under mine.
EA thinks that all created golfers are the same person, thus anything unlocked under one applies to all. Thus why I don't think we will ever be able to play a proper couch co-op because it sees the golfers as the same person.
