Walterjn I think 9 is the minimum I will do. Not sure I want to play 6 or 12, sounds too short to me.
12 sounds shorter than 9? That's where the conditioning comes in, we're told 9 or 18 is a "round" that's all we want to play. I'm the same, after 9 I have no interest in playing a couple more as they don't "count" for anything. Now if you're gambling with friends that's different or if I just hit balls on the 2 or 3 extra holes as practice that I could do.