I actually did something like that about 10-12 years ago, but with a smaller 4wd tractor than in the picture.
I decided to drain about a quarter acre pond on Labor Day weekend. The old pond probably had more than a foot of muck that needed to dry before I could work the pond. About the next February, the ground was pretty frozen. I put the box scraper on the tractor, thinking I could rip up some of the muck, and grade off the top of the old dam. The first 25_50 feet went perfectly. Then I broke through several inches of frozen muck. The tractor sunk up to the frame. That took a little bit of work to get freed.
