I've used this a couple months now - and it does exactly what it is designed to do. I've used it to create a 300 ft long x 15" deep trench to lay water lines for a sprinler system and garden area, rip up an area for a garden (40x50), and break up the dirt in the bottom of a dried up pond. The trick is to take it in layers instead of going for the full depth all at once. For the pond area, it busted up the soil very well, and was then easily scooped out with a FEL. FWIW - I have a sub-compact Kubota (18 hp) and going to deep all at once with the plow will stop her dead in her tracks. So, again, layers (2-3) seems to work the best and puts a lot less stress on the tractor and the plow. I wish my 3-point picked it up just a bit more as sometimes the tip of the plow will catch when just traveling with it mounted as it clears the ground only by an inch or so.

See photo for results of first use.  Hit a root, and this is what happened before I knew it.