I've been using some Mepps spinners this summer. I'm using standard Aglia, and Black Fury models in sizes 3 and 4. I've been tying my line directly to the spinners- with no swivel of any kind. So far, line twist hasn't been a problem, with dressed or plain spinners. I've heard this is wrong, and that I should be using a ball bearing swivel. My question is, do you always use a swivel with you inline spinners? If so, what type do you like? A ball bearing snap swivel, or the type that ties on your line and is added several inches above the spinners?