If your fabric-covered cushions are smelling musty, here's how we fixed it. We pulled the cushions off our H27 in the fall and stored them in the garage over the winter. In the spring, we had an upholstery cleaning service come by and clean them in our garage (on a tarp). For a slight additional charge they also sprayed them with an antimildew compound. They smelled great most of the summer and really helped keep the boat presentable.