more than likely they are trying to find the upper side of the leaf that is dry. I could be wrong.
And 3 inch hormworms are not so bad wait till they get bigger.
The little buggers are hard to find aren't they? Good luck with them I have never had too much problem with them on my tomatoes, though they were there, but they have devastated my peppers before in a very short time.
Try some Dipel Dust or Bt or even Diamataceous (sp) Earth. Though I prefer hand picking or should I say chopping them in half leaf and all and leaving the carcass as a sign to others that may trespass.