I've been out to SR twice in the last couple weeks, both for OW classes and it's much better than it used to be. The addition of the aerators has made a huge difference with regards to temps. 72-74 from surface to mud (not certain in the silo as I've never been in it) and I've been DMing in a Sharkskin top and dive skin. Most everything to see underwater is now marked with buoys and there are also a few neutral buoyancy "platforms" that are each marked with 4 yellow buoys, one at each corner. A lot of the pavilions now have an upper deck added to them and most of the old docks have been or are being replaced. Air shack has been redone and is really quite nice now. I don't believe they've added any additional objects underwater, aside from a small cessna that was sunk 2-3 years ago. They did remove one of the old cabin cruisers last year, the one that was pretty much a hazard to everyone, especially students. They've also started mowing some of the underwater foliage near the banks to help with visibility, along with adding some type of carp that eats algae to help in that area too. I'm sure there's more Brad (current owner) has done out there but I can't recall at the moment. But if it's been a while since you were out there, go check it out. It's better than it used to be, although don't expect visibility to be too much better. That part has't changed much but what can you really expect from Texas lakes?