Not that I would ever install a bow thruster, I believe that (except for those that have to dock with high currents/winds and those that have to fit a 45' boat on a tight 30' slip), if you can't "park" your boat, maybe you shuldn't be "driving" it, and a smaller boat would be better.
WC the bow thruster I was kindly showing you is for any boat (mine happens to be flatt from bow to stern, but that model can be installed even i V shaped hulls), because it is installed facing down and the cutout actually works as a lid (covers the whole), and is retractable.
Another reason I don't have one is weight in the front, don't need it....
As for installing it is pretty easy, and the whole thing costs less than one might think. I posted the link because you posted the link with the price, so I was showing that your idea (not discussing if its good or bad) costs almos the same as the real thing.