Fished there quite a bit as a kid, had relatives with a boat on the lake. This is a tough lake to fish as it is/was crystal clear. Early morning and evening into night is the best chance of hooking up with a big largemouth. The only different technique than bass fishing up here is trying out the shiner fishing, which you already have and maybe some larger plastics. Put in your time and good luck, I'll be down in Suwannee for 3 weeks in the near future and can't wait. Tarpon has some huge specs and bream too(Crappies and Bluegills).