I let the experts serve my hydro-dipping needs. It sounds simple on the surface, but it isn't. Lots of steps involved. Base part has to be prepped and primed. The graphic sheet is then laid in a water tank(tanks are temp regulated). Graphic sheet is then sprayed with activator. Now the part can be dipped. After dipping parts need to be clearcoated.
There is a member here that will make hydro sheets. Just send him your file. AFAIK there is no way to do it with our printers.
There is supposedly material available in China that will run through a wide format printer, but I haven't found it yet.
Can you make money with it? Yup, but it's a lot of upfront money, steep learning curve and a ton of shop space. You'll also have to deal with air regs in your area as you'll be using automotive type bases and clears.