You could do one round of each format for the first 3 rounds and then do a draw for the fourth and final round.
Alternatively you could draw a format at the end of each round.
Horsham's Surprise Winter Series
You could do one round of each format for the first 3 rounds and then do a draw for the fourth and final round.
Alternatively you could draw a format at the end of each round.
Horsham's Surprise Winter Series