I think the op is talking about a sulky for a self propelled mower. I can't see how that would work. Turning would be a problem, as self propelled mowers require manual turning. The drive on Self propelled mowers are not designed anything like those on walk behinds either. Even if you found a way to attach a sulky to one, the drive wouldn't hold up. There isn't enough weight on a self propelled mower to pull much. It would mostly just spin the wheels. If the op doesn't want to push a mower around then maybe he should sell what he has and purchase a walk behind with a sulky.