FYI: just brought a whole bunch of island girl cleaning and finishing products from this site for my 12 year old Hunter 40.5 including the non-skid product. I used a single-part marine cleaner-wax on my prior 32 for nine years but used Nu-Glass on its non-skid with good results. That boat spent an early nine months of its life in a repo yard next to a chemical storage and the time did not help the gelcoat which needed to be kept waxed and filled. This boat has been waxed yearly since new, so it's in good shape but I don't like the idea of continually using cutter on the surface, thus the Island Girl. I'll post the results when done and later, after a year to let you know how it held up. Rick D.