How do You Keep Your Boots Dry ?

I am being creative in my thought process here and it may or may not be effective, but what about silica gel packs?
Silica gel can be purchased at a craft store, such as JoAnns, and then poured into a breathable plastic bag such as Reynolds oven liners or pan liners and then put into your boots at night. I haven't tried this method, but it might have some merit and will also keep your sleeping bag from absorbing all the extra moisture which has other negative effects.

Now... is there any way you can solve my issue of not enough time to actually need or test these theories???

Vapor barrier liners work pretty well for this purpose. If you have only a very thin synthetic liner sock between you and the VBL, my experience (and my feet tend to sweat a LOT otherwise) is that the liner sock gets damp, but not sopping wet. Something about your sweat glands sensing when the vapor pressure reaches a certain point and they stop pumping out more moisture I think, but the gist is that the sheer liner sock takes no time to dry at the end of the day, and the boot liner will only get wet from snow/water coming in from outside of the boot, not from your sweat....

On day tours at this time of year, I tend to take off my boots and pull out the liners on longer rest stops. The socks dry nicely when I leave them on my feet, and the liners will dry a bit if I'm in a warm/sunny enough spot.....

Jim Oker's advice is spot-on.

I haven't used vapor barriers for years, but when I did try them I found that my feet stopped sweating once they reached a certain moisture level. I wore thin liner socks between my feet and the vapor barriers. The liners dry fast.

These days I like to take my boots off at rest stops. If I'm stopping for more than about five minutes (and it's warm enough to dry things) the boots and outer socks come off. I lay them out facing the sun. This has kept my feet comfortable on multiday trops.

My source suggests bread bags also work nicely and are not very pricey. 

That's what the guys were doing in the documentary "Mt. St. Elias." They also duck-taped the tongue to the boot.

They also duck-taped the tongue to the boot.

Sounds more like a masochistic weight loss program than a dry-liner-preservation strategy...