Now that is quite interesting, never thought of the woods creating wheel chocks!! I have a smaller version of a similar sled used for ice fishing, but never thought of pulling it over land. By the way the scenery looks great, wish I had something like that in my backyard...
I have the Jet Sled Jr, that I use to drag my felling equipment
I only have 2 acres, and its mostly eastern white pine, yet I have managed to find 3-5 cords of hardwood firewood for the past 35 years, and I still have plenty left, I did one pine harvest about 20 years ago, I cut 13 trees and had about 11,000 feet of lumber milled, enuf to build my barn
planning on another similar sized pine & hemlock harvest, may be an oak or 2 as well, I want to build a wood shed, gazebo and small cabin