The winch needs to be up off the ground about 10 inches or so for the crank handle to clear the ground when at maximum extension. Since the mount only receives vertical force and not horizontal, it doesn't have to be heavily bound together. It only needs to be sucre enough to keep from falling apart; the fasteners carry no load other than the mounts own weight.
I used doubles up pressure treated 6x6's held together with 5/8 - 11 threaded steel rod.
I have to trim off the excess material but will leave it on until I'm sure how I want to mount the wheels and handle that will let me roll this around.
If the weather holds this weekend I'm going to see how this does on some small stumps.