Years ago on a P 18-2 I once had, it originally came with a Dacron sail, and Fiberglass battons.

I took the whole set, and with a belt sander, tapered both sides form about 1/2 way forward, so they were thinner at the luff. This worked great for sail shape!

Then, my next set were mylar and foam battens, which come tapered.

True, the FB battens weigh more, but are more durable, and less $$. If you're not racing much, I'd go with a FB hand tapered. Of course the price of one foam batten isn't much either, and there are sailors with spares lying around.

Isn't Rockport fairly near Corpus? Look there man.