Backhoe on tractor is not true industrial machine. It will get the job done it will take much longer time on large jobs. They don稚 typically have the same hydraulic flow Rate as true industrial backhoe or excavator. You can find well used industrial backhoe for under 20k. I am digging pole barn posts using 35 hp tractor with rail mounted backhoe it digs 6 foot depth but when I hit clay more time is needed to accomplish depth. Putting in perma columns concrete post that attaches to wood pole. Removing the treated post from ground exposure.