I've caught them up to 18 LB on 12 LB suffix. I use a fairly limber Shakespeare 7 foot ugly stick light and have the drag set pretty light. To me, line size is a trade off between being able to horse them in on 30 lb test and having enough to get my other pole reeled in before I hit the spool when I hang up trolling when it's windy.
John 21:3 Simon Peter saith unto them, I go a fishing. They say unto him, We also go with thee.