Will either work on extreamly hard ground? I have a grader that I use and it cuts great on the area of the arena that is just sand (when I got my 1st 21 loads of dirt, I got the sandy,sandy clay and it was perfect). but after the arena set up for a year to allow the ground to settle (where I took out trees) there were some holes to fill in.. and that is when the wrong dirt was delivered. 13 loads of sandy clay.. and I paid a guy to spread it, but made sure he didn't spread it out on the outside of the arena so I could still train w/out having to be on ground like cement.
So.. those things look like they would be great if I didn't need to chop up ground that is like cement. I pull the arean daily with the drag I have that has big teeth and weighted down, but it will not break up the dirt deep enough.
What do you think? I'm up for any suggestions.