I just randomly use one side or the other for each stroke, guessing that by the end of the shave it should even out by law of averages. I've wondered what the numbers on some blades are about, though.
That video is too funny, what's with the eye patch......... and another vote for the method James uses
Okay, two pages on whether or not and how many times you change sides on a DE razor. One side fills with cream turn to clean side. That side fills up, rinse off, start again. Rocket scientists?
I don't spin or flip. I hold the razor steady and walk to the other side. Wish these things came with instructions...
I couldn't find the video but I distinctly recall these guys trying to hang a picture on the wall. The nail was pointed the wrong way, so they walked across the room and hung it on the other wall.