I've got a ZWO in the 2000 - 2003, and i really loved this boat. Very special, good for playboating. I've run lot of class IV rivers, but it becomes difficult to control in big volume runs. I had to let it at San Jose Airport, as they asked me 500$ t carry it on the plane!

I've used about 20 boats in my life... Mafia is my preferred one !

My absolute preferred kayak ! Of course not recommended for creeking or low water... But with my second Wavehopper I ran in Italy the Sermenza gorges, and all the Sesia runs (included Salto di Piode, Alpin run and Balmuccia Rapid ans gorges). It is a race model, but very stable and easy to run.