The carbon battens and the fiberglass have differing strengths and modulus of elasticity...It is a case of divide and conquer...the carbon battens will be loaded up and take all the strain before the glass comes fully into play...after the battens fail you are just back to whatever glass cloth was used...it all has to work in unison and I am afraid the carbon battens and the fiberglass (more than likely E-glass) are too different in physical properties. That is something the windsurfing community found out back in the 80’s…it sounded good that the builders put a hybrid carbon cloth in the laminate, I saw one F2 board broken in half…they had a cloth with every 4th or 5th thread in “0” orientation was carbon fiber, the rest were E-glass. Others would add a few 1” carbon tows on a “0” axis along in the glass with the same failing results. Again…it is a case of divide and conquer. The carbon gets loaded up… fails, and what is left is just the glass…and because the builder was relying on the carbon as this miracle material, they used a lighter glass laminate…bam…catastrophic failure. There is more to adding carbon to a laminate than meets the eye..