I would agree with Mary

I recieved my new sails today and the advice from the sailmaker, a well regarded catamaran sailor, was to tension them battens to eliminate any wrinkles and leave them alone. Furthermore he did not think it was necessary to release batten tension between sails. The main thing in his opinion was to get the wrinkles out and use other adjustments for sail shape.

Sail Faster!
Bob Fraser
P19MX w/spin