I don't remember where or the specifics of the how, but I remember reading an article (I think it is online) where the loop side of velcro was used as a light friction brake against the inside of the wheel. I wish I could remember where I read this, but I guess it could all be a crazy creation in my head full of ideas. Anyway, this would not be a mechanical brake just a simple friction brake to help slow things down. Has anyone else seen this?? [&:]