Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fun - yes. Durable - NO!

Purchased Feb. 9, 2012.Installed Feb. 25, 2012.Load rating up to 250 lbs.Average use on weekends by kids less than 75 lbs.Trolley inoperable - April 28, 2012.During the average course of a ride the rider will swing left and right. Because the trolley is made of plastic, the metal cord will rub/wear the trolley. This will eventually create wear that the trolley isn't designed to withstand. Our rear wheel became so deformed that it wouldn't spin, but the rider could still descend on 3 wheels. This further deformed the rear wheel and created ill wear on the remaining 3 wheels - till it just wouldn't slide.I think if the trolley had somesort of metal guides for the cablepath it would have lasted longer.I just expected more.