I think the reasoning behind the rules in Will`s post (20) is that if you have 1 dnf in one of 2 finals you are at a big points loss.
Where you count qualifying as a scoring round and then you average 2 out of 3 for results ? you have less chance of a big points loss.
Correct me if im wrong but can the rules be changed as it is only a club championship not a national or not ?
On that point it is also good to have a slightly different format for a different championship.