Believe it or not, I shot this with a Nikon point-and-shoot film camera and I didn't use the viewfinder. Instead, I simply aimed the camera in the same way you would a pocket-sized digicam. You could say I was just lucky. On the other hand, I find that the more I practice, the luckier I get.
There was a time not too long ago when most experienced photographers--myself included--could do things that by today's standards might seem magical. We could pick up an all-manual, meterless camera and, just by knowing the film speed and judging the level of ambient light, set the correct exposure within a half-stop of perfection, even indoors.
We could estimate the camera-to-subject distance and set that manually too, without looking through the viewfinder, and no less accurately than one of today's multi-point AF systems. Some sports photographers could manually follow focus on running athletes and racing sports cars--although I grant you they had to use the viewfinder to do it.
We could use a waist-level viewfinder and, even though the image was reversed left-to-right, track a moving subject. And let's not forget the view camera users who thought it was normal to look at the world upside-down.
We could load and process film in complete darkness. We could burn and dodge a print using nothing more than our hands and pieces of posterboard taped to lengths of wire--then make ten more prints just like it.
I'm not saying that any of this came easy; in fact, it often took a ridiculous amount of practice. The point is that, as my mother always used to tell me, "It's amazing what you can do when you don't have any choice." It's also amazing how much fun you can have doing it.
These days we suffer from an overabundance of choices. You may find you have a lot more fun and a lot better results if you limit your options. Fewer options result in more freedom and ability to focus your attention, to improvise, and yes, to do whatever you have to do to get the job done.