The easiest way to control the lateral swing of the implement is to use a chain on each pull arm of the 3-pt. hitch. The chain can be attached to the fender bolts by using a mounting bracket and secured to the outside of each arm. The chain should be either 5/16" or 3/8". For best results, the angle of the chain to the pull arm should not exceed 45 degrees as the larger pull angle will not reduce the lateral swing. The length of each chain should be equal. I would assume that you are only using CAT. 1 implements. The length of the chains should allow each pull arm to swing inward to be able to hook up and install the lynch pins on the narrowest hitch. Before hooking up to an implement, check the minimum width of the pull arms at the bottom and top of the lift cylinder stroke. By using the chains, the 3-pt. hitch will allow limited side movement of the implements. Some of the aftermarket 3-pt hitches do not have provisions to adequately limit the lateral movement.