But surely you will loose batten tension just when you need it; ie under full load when powered up the shock cord will be stretched (because of batten tension) and allow wrinkles to form.
Thought idea of cambers was to maintain batten pressure (ie hold sail out) when powered up. Thats why they tend to have better wind range ???
Its like using a slight compressible batten. If it works would be easier to do at batten pocket end;just hold them on with shock cord ????
Sail will "tack" easier but be less stable ???