This is the easiest way I found to connect battens directly to the sail, yet keeping good shape and minimising creases...
Screwing battens slightly off results in ugly creases, mistakes also can't be rectified before rigging on boat...
The Scaffolding System helps me tweak the cloth, see the camber and correct any imperfections before it's too late.
Keep Junking
Balkan shipyards
https://youtu.be/x3PUJ1D72YI?si=4QoVwySzAY7oGhOc