The thing is, I doubt there is anyone here that fishes or would fish a Zebco 33 as an ultra light trout rig. So you're probably not going to get any advice on here on how to use that reel for that purpose. If you can make it work for you, that's great, but you're probably going to continue to face the same issues you're facing now going forward. There's some folks on this board, Ham and Phil Lilley come to mind, that fish 1/16 oz jigs quite a bit for trout. I think you'll find they use small diameter braid or Nanofil with a fluoro leader. I've seen Ham in action and he can sling a small jig pretty well. If you are interested in how they do it, you could PM them and they would probably be happy to share with you what their set up is. If you're going to go that ultra light route, the right tackle can make a world of difference. That doesn't mean it has to be expensive tackle either.