The good news is that bad vis is totally okay for shark teeth. In fact, I prefer it because there’s less to look at and I can focus on finding teeth. However, I’ve only been diving in the Venice, FL area. The depths there are in the 15-20ft range. It’s easy to lose your buddy but our charter, The Aristokat, gave each buddy team a flag. That way, they could keep track of us but, also, if the buddies became separated, the flagless partner would surface and redescend down their buddy’s flagline. If Savannah’s depths are shallow, this might be a good technique for you.
Also, I’m moving to Macon in July and would be happy to meet up for some ocean diving.