Hey all... I just left Home Depot and found a great deal on a water cooler rack that can be attached to your trailer (enclosed, or open). It is not as robust as those made by the lawn accessory dealers, but neither is the price. It holds water coolers from 2 gal. to 5 gal. It is 3/8" round (1/2 basket) and has (1) strap for tightening the cooler to the holder. I spent $20.00 on it, and thought someone else might be interested.