Add a couple of straps to your plywood & carry it like a back pack, if you carry your tools in a backpack when you hunt, cut a couple notches on two corners to hook your backpack straps over. no pain no strain! If there's a lot of trees etc that make it difficult to get a piece of ply through, Grab a couple pieces of carpet. Roll em up. Lay em out stomp em down & hunt another area for a little while. Go back & your grass will be layed down nicely. The plywood trick also works great for muck & mud like lakes & ponds!
If the cattle are eating clover, buy a bale. Take a couple flakes & spread it where you want to hunt. When the cattle run out of easy chow they'll eat the rest. The other good thing is the farmer probably won't mind you feeding his cattle for free.