Any suggestions on a reasonably priced spring loaded chisel plow for a 40 horse NH. Doing food plots for deer. I'm only planning to cut about 4-6 inches deep to avoid bringing excessive rocks. When I try that shallow depth with my spring tine harrow, it constantly kicks up rocks and dirt, hitting me and my partners in the head.(kinda funny to see a buddy get pelted sometimes). It's just not good for that shallow a cut. A trip shank chisel would not kick up debris like that. I'm looking to break up the ground a bit before discing. Too rocky for mouldboard plow or tiller unfortunately. At that shallow a cut I imagine I could pull a 7 shank maybe. Any thoughts??