Recovery, I'm about where you are in terms of gaining control. I've been thinking a lot about the engineering aspects of urinary control, so here goes...
When you first come out of prostate surgery, you've lost the internal sphincter, and you never had much use for that external sphincter up till now. Let's say that S1 is the "resting strength" of the external sphincter, S2 is the "peak strength" of the sphincter when we try really hard to hold back the flow, and P is the pressure exerted by the bladder. Initially, S1 is pretty close to zero, and S2 isn't much better, so P will always be greater than S1 and S2, and you dribble all the time.
So, every day you do those Kegel exercises to strengthen the pelvic floor/sphincter muscle. They increase S2, but they also increase the bulk and muscle tone of the muscle, and this is really important, because it means that S1 increases too. The pelvic floor muscles are a mix of voluntary and involuntary fibers, and the involuntary ones are the important ones for staying dry when you're not thinking about it.
The first sign of progress, then is when you can consciously hold back the flow for a few seconds, this is when S2 > P. Then the muscle gets tired, and whoosh, there it goes. Over time the muscle gets stronger when you clench it, and you can make it all the way to the bathroom without much leakage. That's about where I am now. I can walk about 10-20 seconds to the bathroom, depending on how much urine is being held back, what time of day it is, how fast I'm walking, and whether stairs are involved. :)
The second (and much more gratifying) sign of progress is when S1, the resting strength, starts increasing, and at some point S1 > P, at least some of the time. I'm just seeing some of that in the last week or two, and it seems that I don't have to work at holding the flow so much; the sphincter seems to be doing this more or less on its own. I honestly think the magnesium is helping, and it's probably also due to the daily Kegels.
I'm looking forward to the time when S1 > P most of the time, even if P is high, say when I've got a full bladder or I'm doing something active and outdoors.
Hope this helps. I'd be happy to hear from folks who are fully (or almost fully) continent, to see if this matches their experience or not.
Jeff (the geeky one)