my folks just bought 54 acres that used to belong to a trashy contractor and the land is covered in metal from nails, ps pumps, rims and I even found an old rifle that went throught a fire. you get the idea. I need a magnet to pick up small stuff and was thinking of something like 60" to 72" across to hang from the bucket of my tractor. what do you guys reccomend? this is what I found so far http://www.northerntool.com/shop/tools/product_25122_25122