I would go with a size 4 octopus/drop-shot hook under the shiner's dorsal fin. depending on the type of water, structure and cover you are fishing, you can drop-shot, use a slip sinker (egg) on the bottom, small splitshot like booyah said, or a small splitshot under a float (over weed beds).
There are tons of options for presenting live bait that work.
Not sure where you're located, but around here, fishing with shiners will give you a 50/50 chance at catching largemouth or northern pike (pike love shiners)
@itsaboat:
largemouth = laargemouth bass, one of the "black bass" (largemouth, smallmouth, spotted). They are not a true "bass", rather a member of the sunfish family.
Here's a good wiki entry: http://en.wikipedia.org/wiki/Largemouth_bass