I am curious why your 3 pt disc is "just about worthless"? Especially if it is a good one, and heavy? My biggest problem with 3-point discs is the extra fuel they require to get the job done, compared to a tiller or a pull-type disc. A couple of folks on this site have never agreed with my reasoning however, but every farmer I have met in real-life concurs. That particular pull-type disc you pictured does look to be a lot heavier than would be needed for most foodplot work however. A few years ago, I picked up a much lighter, old, 8-foot JD "drag" disc, that basically gets the job done for me using less than half the fuel than the 6.5 foot, Dearborn, 3-point that I used for (20) years prior. The best part was, it didnt cost me a dime, because an old farmer threw it in with a wagonload of "junk" for $100, and I got more than that for the rest of the load. All that old JD disc needed was a new rope (controls the angle from the tractor seat), and a little work on one rack of "cleaners". I really needed those cleaners this year. Here in Upstate NY, we had record spring rains so I had to use it in a little mud to get all my corn in in time to beat the frost. Also, it sure was nice to be able to pull a single pin and leave that disc in the mud hole, the one time I did loose traction with even my 4wd tractor. Unleaden,the tractor walked right out, I pulled a chain out of the toolbox, dragged the disc onto some dry ground, and was back at it in under 5 minutes, hardly getting any mud on myself. After every use, I give it a few shots of grease, and I dont worry about storing it outside since it was free. Maybe I am not doing as much "work" as I was the years I used the heavier 3-point disc, which may explain some of my fuel savings. What explains the as-good, or better crop yields I have obtained these last (3) years for less than half the fuel input however?