Bainbridge is one manufacturer. If you are close to a West Marine store, call and see if they have battens or batten material. You will need to know the length but I suspect that one came out and was lost. If that is the case, I would do the following:
1. Measure the length of the entire pocket. Add an inch as you will have to cut.
2. Tell them the width of the batten material is 5/8 inch if I am correct.
3. If shipped, it will be a tad expensive. West Mariine cann send it by the foot
4. If you cut or the ends are not rounded, if you have a grinder or file, round
the end of the batten mateial and on the side of the rounding to prevent chafing
of the pocket.
5. Make sure when cutting to avoid the fiberglass getting into your hand or ouch.
6. To insure that you do not loose it again, drill a small hole in the batten. Then I
would take for example a fine tip soder iron to put a hole in the sail to make a
small hole in order to tie the batten onto the sail so not to loose it again.
When you make the small hole with a hot tip end, you will sear the hole so the
sail material or dacron will not come apart.
crazy dave condon