I also am using a 4 foot tow-behind. I put it in the hole in the drawbar just behind the PTO shaft. I can cut dry 12 inch high grass in 2nd gear no problem. In first gear, it might bog down a little bit in damp 5 foot high grass. I think that a 5 foot hog might be pushing things a little for anything but regularly mowed grass that never gets very high. When hooked up to the drawbar, with the rear wheels set so that the rear is a tad higher than the front, the mower cuts the grass to about 6 inches, so there is a lot of room under there to prevent clogging. If you want to use a tow-behind, you will have to swap the 3 point conversion kit for the original drawbar while you are mowing, as the left lift linkage will get in the way. There was a posting from someone on here a while back that indicated that he was successfully using a 3 point mower on his Super-A. It may depend somewhat on the brand, since the farther back the mower gearbox is, the less of an angle the PTO u-joints form. However, if the gearbox is too far back, the PTO shaft would hit the left lift linkage. I was afraid to plop down $500+ to an experiment, so went with the tow-behind instead. They cost a little more, due to the fact that they have two rear wheels and a fancier rear wheel attachment method. I am using a 4 foot King Kutter, and like it so far (first year with it). You are unlikely to find a used tow-behind, they aren't that common. You may be able to find a used 3 point type for sale that you could try hooking up before you buy to see if it would fit. Let us know how you make out.
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