I've got to go with "Join new team" because I always seem to be changing rosters, but I'm not certain that there ever was a team I was 'known for.' In my last 12 tournaments I've partnered with 14 different team members and played under 9 different team names. You could say that I recently 'joined' Team Knockerheads since I just put in my first tournament under that banner, but it's largely a semantic issue because we could just as easily played under 'Los Padres' and said Dobbie was joining Grant and me, or that Grant was joining 'Run DMK'. We play under Knockerheads becasue the name means a lot to Dobbie and he's our captain.
Anyway, I ramble... where was I? Join new team - especially if it's only temporary or only once per year! Kubb is a social game, and mixing up partners should be something everybody does fairly regularly in my opinion. Take a look through the player page on Planet Kubb, almost everyone listed has played on more than one team, and it's about a whole lot more than just being more successful if you ask me. They're playing with old friends, playing with new friends, playing with family...
Eric was razzing me a little about saying that I won't be playing solely for Knockerheads for the rest of my life (although I am looking forward to a good long run!), but honestly I'm constantly looking for opportunities to play with new people. I chomping at the bit for a chance to be a part of the Big Red Machine, and there just might be an outside chance I'll get to play in a Kubb'ings jersey one day!
I'd be lying if I said I don't play to win, but there is a whole lot more that goes into who I choose to line up with, you can believe that.