http://www.tractorbynet.com/forums/attachment.php?attachmentid=195237&stc=1&d=1295097574
http://www.tractorbynet.com/forums/attachment.php?attachmentid=195238&stc=1&d=1295097574
Ventrac had no problems with 20 & 24" snow last winter. 9 drives (each close to 1/4 mile) and 1/2 mile to main road.
How about a Myers adapted for a quick attach with hydraulic tilting?
Those work, but with only the chain holding them from dropping, they tend to ride up & over snow not unlike a pickup plow. I used one last year, but you can't utilize the tractor's advantage over a truck of downpressure. If the chain is replaced with rigid stock, it would be a winner.