I've had the chance to play John's Island South on a couple of occasions. One prior to it being renovated by Craig Schreiner and once after. It's a development course, typical Florida flat. The fairways are heavily tree-lined, mostly with Oaks. This is in keeping with the 50% canopy that I've heard all occupied lots must have there.
Before the renovation, the course had some similar looks to Harbour Town. The course is routed in two loops working South (front) and West (back) away from the clubhouse. There was a bunker on the front nine, I think #6, that had railroad ties as it's face. This has since been removed. The greens were smallish, and not too severely pitched as I remember. They had some subtle internal contouring, but not a lot. The thing that stood out to me about the course is it's general tight layout.
Schreiner's work was mostly a green and fairway renovation which has improved the condition of the course. He did remove a couple of Dye touches, but the general theme of the course has remained.