Good luck!
Oh, just figure its worth a mention...
I heard that there are a certain type of lawn sprinklers that can be used to create "wave effects" also. I dont remember what kind but there are ones that are pop-top style and not-pop-top style. Something to keep an eye out for a future DIY project if youre up to it (or if your SCWD is shot). From what I hear, the only metal in them is some spring that can be pulled out. Each head should only cost a buck or two, too.