Your best tool right now is the freshman and sophomore start. You've got a bunch of marginal guys, so look at the recruits you're interested in and ask yourself if they're as good as your current starters. If so, offer a freshman start. Then look at who's graduating after this season. Will you need a recruit from this class to start next season? If so, offer a sophomore start. Offer them often, and offer them early. NOTHING generates recruit interest like an accepted start offer. They're cheap, and if you don't sign the guy, you don't have to worry about the start.