We went with a box spring for a long time, finally built one from scratch this year. I cannot believe we went without it so long, I would recommend it being one of the first implements a food plotter buys.
I use the packermaxx cultipacker. You can fill it up with water or sand to get the weight that you want. It is also light enough when empty to put it in the back of a truck by hand. I can post some pictures if you want as I am leaving today to go work on food plots this weekend.
Looks good Texas. I am almost done with mine. I'll post some pics if I can ever find time to finish. The one I am making is a plain Jane agri supply wheel cultipacker.
We built it a couple of years ago so I don't remember exact measurments but we based it off the plan I attached. I think we used 2" galv pipe for the frame, the culvert is 6"x 48". We cemented a 48" piece of 2" tubing inside the culvert, 1-3/4 galv pipe for the axle, no bearings, the axle rolls freely inside the tubing. We also added a brace across the middle of the frame and 2 bolts on both ends of the axle where it meets the tubing to limit back and forth movement of the culvert. The hitch is a wally world special.