Hi guys, I just glassed my first fin. I used 3 runs of the rovings cord And 2 layers of cloth, it feels strong but looks pretty thin. Its a 10.5" Single fin. A guy on a facebook page said that I should have done 8 on esch side, and that I should add a few more to make it stronger. The question is, Should I just add then over the existing and then add another layer of cloth, or do I need to start the whole process again? Thanks a lot.