No contest - Poliglow vs. Island Girl
I can't really tell you about Poliglow, but I certainly can tell you about Island Girl. Use the pink stuff - it's great to clean old, chalky residue off your hull when it's not been maintained properly. The rest of it is junk, as a matter of fact, within 12 months, you will find yourself using soft scrub to remove it. One of my dockmates tried it, it looked great. I bought the stuff, used it, it looked great. Soon several of us on the dock had it on our boats. Not too long after that, soft scrub started selling well at the local stores, as we had to remove the Island Girl. It stains a dark color, and has to be removed.