I think personally it is all in how you drive and what works best for you. I love a spool for outdoors and was using it w/ rubber on carpet up untill we changed the layout. For some reason it did not seem to work as well for me on this layout so I am going to try a one way next. I have heard and been told that a spool is not always consistant on carpet. I think it all boils down to driving style as well.