It all depends on the size of the bait and the size of your hook. Don't use too big of a bait if you aren't using big hooks or else you won't be able ...more to get a good hook set.
If you aren't going to leave alive then you can cut off the head and use it. And depending on the size of the bluegill you can either fillet them and use the ...more fillets or cut them into chunks.
