The best way to run your car on water is to get a good guide. There are quite a lot of them out there, and some are very popular. A new one that I definitely like a lot of Water Car Pro. This is WAY easier to follow than most others, and I have found that it gives much more accurate information. You also get a bunch of unadvertised bonuses and some cool other stuff. The guy behind it (Oliver South) also definitely knows what he is talking about. Overall, I would definitely recommend you take a look at that product.