Hello neighbor. I am not a proficient box blade user, never got the knack of it and haven't yet figured out what to efficiently do when the box is full. Probably (as others will probably say a box blade works better with hyd top and tilt. What little back Blade work I have done I like the casting off to one side of the spoils so they can then be incorporated back into the fill. What I do know is; if you do not rip up the hard areas around pot holes, grade out and re-compact to match the adjacent material you will shortly have more pot holes. Best results for badly pot holed roads is to scarify the whole road , grade and re-compact end to end. Any place that has a soft spot will doon be a new pot hole as traffic beats the loose material out. In our rainy area; anyplace where water accumulates compaction is destroyed and new pot hole. So, grade to drain off one or both sides. 6" compacted crushed (not pit run) gravel compacted to 95+% makes the best long life rut and pot hole free roadway. The average home owners do not understand all this so private drives and roads become axle buster. A good road/driveway cost money to build and maintain. From a lifetime of construction and professional facility management.
Ron