For the first snowfall of the season, I used the skid shoes set about an inch below the blade edge. For the second (and larger) snowfall, I set them just a bit lower than the edge. (These are fixed locations - a set of holes in the shoes, not a slot.) Well, for some reason, the leading shoe wouldn't stay in place - the nut wouldn't hold, and it kept digging in. I took both shoes off, and found that I could plow with no problem. I set the toplink for the least aggressive blade angle, and did the finish run with the blade backwards. Concluson? Get lockwashers, a bigger wrench, eat Wheaties or spinach when I want to use the shoes (when the ground isn't frozen solid); when the ground IS frozen solid, I'll definitely take the shoes off. Drive is 800-900 ft. of crushed stone, with a entry of concrete pavers. I have a BX, I think the blade just floats with no position control.