Yeehaw! Finally - something about which I am an expert! I have a
BX1500 - nearly identical size to the
BX2200. I bought a subsoiler - couldn't raise the thing high enough to keep it from dragging. I lacked about 4" in height. So I exchanged it for a middle buster (King Cutter - something like that) and took off the plow blade and fastened a little 3" wide plow point where the blade was. Conclusions:
1 - I can really drag a trench in a hurry. A couple of times back and forth and I have it about 8 inches deep - maybe a little deeper. I wanted something deeper so I welded on another little blade. I'm about at the maximum length on the middle buster without constantly dragging. Even so, I still hit and scratch all the grass off someplace when I go over a bump. I've messed with every aspect. I Do Not Believe that you could drag a trench any deeper than 10" with a stock BX and a stock middle buster. I live in Colorado and 8" isn't nearly deep enough. I'll be renting a real trencher when I put in the sprinkler system.
2 - The middle buster is a fairly useful item. I think I paid about $100 for it. With the narrow point I can really break up the garden deeply and quickly. I've also used it to try to pry up a dead bush. I'll use it later in the summer when I pry up a cracked sidewalk. The wide buster blade is useful for the garden but that's about it.
3 - Just tonight I was using it to pull out an almost dead bush and I broke off the 3" wide plow point! They are easy to weld and I'll be back in business in no time. I've hit large rocks with it while test-trenching and never broke it, but an old bush snapped it right off.
4 - Case-hardened plow points are nearly impossible to drill through! I dulled a couple of bits and finally said "good enough". I wanted a hole in a different location. I did not get it.
5 - A middle buster is one heavy thing to drag around to the tractor and it won't stay up by itself while you align it! Wear your steel-toed boots because you'll probably drop it on your toes a couple of times and bang it into your knee.
To summarize, I regret buying the thing because it won't do what I wanted it to do (dig 18" trenches), but it isn't a big regret because I've found other uses for it. I have a modification to this design bouncing around in my head that would solve the problem but no time nor drive to make it happen.