We started off on 21 but the wind picked up requiring a move to 27. Then the wind died but couldn't make up it's mind which way to blow. A harrassed duty instructor made a decision to go back to 21 but almost immediately reversed it and we ended up on 03. Fortunately that was the end of our wandering.
Very soarable for most of the day even under the approaching top cover. 10kts sink in the circuit made life interesting for one or two.