FWIW - After a couple of 20' - 21' fiberglass boats (Ranger 520 and Z20) I bought a new boat almost 3 years ago now, and I went aluminum. I love the aluminum for a number of reasons, including ease of towing, moving around in driveway/garage, fuel economy on boat and tow vehicle, no gouges (just dents of course), and I think it will look much better for years to come. Sure, I would love a fiberglass as well so I could choose what I felt like on a day-to-day basis, but I have not regretted buying the aluminum.
I too have aluminum rt 188 after owning fiberglass no regrets.
Good stable fishing boat for a helluva lot less than a quality fiberglass boat.
Easy to maintain and tow . Never go back to glass .
J D