hey guys i want to get a sulky for my 36" metro but after searching online i am a little confused. The most popular one i see in my area are the single wheels ones. then i have seen the double wheel ones, then i also seen the new one called a proslide xt which does not uses any wheels and gives the striping as you mow. i like the concept of the proslide but i am not going to pay 500 for it....so what are the cons of a single or double wheeled sulky? do they leave tire marks or ruts?