Spinnerbait-20 or 25 lb. green Trilene Big Game--if the fish are aggressive, biting spinnerbaits, and don't see that big wire, then they aren't going to pay any attention to line size. Plus, when a five pound smallie hits a fast moving spinnerbait, you better have stout line or it is likely to snap.
Heavy tube-rarely throw anything heavier than 1/4 oz. (talk to Mini for heavy tube jigs
) but almost always use 10 lb. clear line when throwing tubes. I want to see any little movement, and I can't see green line very well, but don't want to use a gaudy line either.