Has anyone had any experience with these chains http://www.youtube.com/watch?v=k0RHQ0dP2IY ? I realize that if the mud is deep enough to drag the bottom of my NH Lx665 the chains won't help much. I have slick foam filled tires and in the last couple of years it seems to rain so much that our farmland never dries up. There are many times I can't use my machine when I would like to. I wonder if these would help without being more trouble to install than they are worth? If better tires would do as much maybe that is the way to go. All my use is on dirt, no pavement or nails, glass, etc.