I have turned down working for a couple HOAs and both stocked GC following hatchery guidelines in initial stocking - which was a bad idea. GC should be stocked reactively...never proactively, IMO. As a result both HOAs are proudly managing 50 and 125 acres of turbid nightmares visibility under 6"- neither will take my advice, which is plainly evident - nuke and reset. Be careful with GC - RAH is correct, add them selectively and be wary of advice dispensed by hatcheries [with the notable exceptions of Lusk or Overton], most have a single goal in mind and are rarely motivated by anything else: Sell fish.
Per my previous post, even with an abundance of macrophytes available as forage, GC can still cause turbidity issues, and become pellet hogs, too.