Photo 9 for Ski Nautique (Waterski / Wakeboard Boat) P/x

Hello, I am from the Netherlands and have interest in your boat, only question I have is about the prop, is thsi 4 or 3 blade? Can the boat be tested? Thanks a lot, our current boat is from 1991, we picked it also up in the UK 5 years ago near London, this could be a nice upgrade in age. Kind Regards Johan Hamelink