RE: seeding logging roads
If you add up the square feet of the trails that wander through your property I would bet that they add up to more than the square feet of your food plots. For example: just a quarter mile of trail would be 1,320 feet long and if the trail is 10 feet wide that's 13,200 square feet of 'extra' food plot area to plant (equal to a food plot 115' x 115').
On my trails they get too much use from me driving on them in the summer to plant a perennial, but as I finish up the food plots that my trails lead to I prep them for planting rye, oats and wheat. So I disk, plant and cultipack and don't drive on my trails anymore, usually after late August early September.
Some areas don't get much light until the leaves fall; but it grows and attracts deer.