Oh, sorry Johnny J. Gave a cursory answer and forgot we had talked before.
Have you tried the stubble reduction approach? Perhaps a couple of passes (even in the same direction) would be beneficial, particularly if you are not shaving your head every day. That could help with the patchy stubble issue. And given you are only shaving your head every few days or whatever, time is presumably not as big an issue as if you were shaving daily.
Another thing to keep in mind is that I find it fairly crucial to have the blade moving as it touches the skin. I can guarantee that if I don't have a nice smooth stroke going at the initial phase of the stroke, I will nick myself. This generally means that the blade needs to be nice and sharp and well stropped.
On the sharpness front, have you tried stropping mid-shave, or when the blade feels like it's pulling? Could be worth a shot. Also, maybe you could have two razors lined up per head shave - like a tag team approach. When one gets puffed, grab the other.
Also, it is worthwhile getting to know the grain of the hair growth on your head. You actually may be trying to do an against the grain first pass on some areas, which is never going to be pleasant, and could also speed up your edge deterioration.
Keep us posted on how you're going. And hang in there - you will get it with patience and time, I'm sure of it.
James