I had the guy selling the 650 SX bring them over on Sunday to give it a test ride, and it may be permanently staying there pending sale. The ski is surprisingly quick (It has a coffman pipe and other bolt-ons), it just won't carve to save it's life... I was also riding straight ahead and got knocked off balance by a sideways wave and the ski tipped on its side and stayed like that until I swam over to get it.... So top-heaviness confirmed. That being said, although it's different, I still had *almost* as much fun on it as I did on my SN...
Also, I haven't checked it out yet, but it feels like it has a a scoop grate or something because as soon as I get the revs up and take to some chop, the thing just pulls like nobody's business! Very strong engine.. Comparing it to my memory of riding a RN and 2008 SX-R a couple years back.
As for the SN, maybe I will rebuild it someday. I just need to fix all of the bad body work/bondo and fix all of the other cracks in the hull, paint, turf, new handpole, engine, pump, electronics, impeller, and she'll be good... Otherwise, keep your eye out as I may be throwing the hull up for sale for someone interested in a project ski.