Putting a 2.75" hardened steel pipe on rear blade for plowing in soft conditions?

[In.the.Piñons]

BTW I did pick up 10ft of 5.5" dia oilfield pipe today. It looks to be about 5/16th thick and weight was about 80-100lbs. $100 for the pipe and my fabricator quoted me about $160 to cut a slit and weld on end caps.