I have a roller for a 30foot - the roller is 31-32 feet wide, I have had no problems with it, but it's not your typical roller either, it is made from 4" aluminum Irrigation Pipe (as best as i can tell) and is completely custom made. A lot cheaper that anything you'll find on line or at the pool stores, however, unless you live in southern ontario, you won't be getting one of them since the guy who makes it is a local dealing only with locals.