I do have the micro card -- yes, it is very handy, but the quality of the graphics on my GPS is not great with the Backroads software. It's ok, but not like the US National Geographic topos. And I always carry a bow saw in my truck. I have never had to use it, but I am sure that there will come a time. It would be good for firewood, too, but we never have a campfire -- it is almost always too cold or wet or windy to sit outside, where we are camping.
Another useful tool for the rough forestry roads in Canada is a pry bar -- I made a "collapsing" bar out of two sections of a crowbar that are joined by a thick section of pipe. The whole thing comes apart and stores fairly compactly. We did have to use it once to clear a rockfall on a seldom-used forest road in the Sequoia National Forest -- two of the rocks weighed more than a hundred pounds each, and we could not roll them without the pry bar. That would work on a big section of log, too.
Also, you could use your winch to move the logs, or even hook up a tow strap and slowly drag the log out of the way.
