is it the inline spinner with the treble hook? GREAT lure. I have caught so many bass, crappies & trout on those, I can't even count... they're fantastic in current, like rivers & streams. I always tie em on with a good quality snap swivel as they will twist your line.
But yeah, if the weeds are too thick, you'll hang up instantly.
Here's a bass & pickerel caught on another brand of that same kind of lure(you might recognize the spot - it's the same place we were talking about the other day!):
These were caught on a Roostertail, but I actually prefer the Mepps version. I find the Mepps spin better, whereas the Roostertails get hung up on themselves too easily, wasting a cast.