Meguiar's Marine/RV Hard Water Spot Remover M4716 - Hard Water Spot Remover For Boats and for RVs That's Easy to Use Spray - For RV and Boat Detailing - Remove Water Spots and Add Protection, 16 Oz

This Marine/RV Polish by Meguiar's is amazing! It delivers a professional-grade, high-gloss shine on fiberglass and gel coat surfaces. Easy to apply and buff off, leaving a sleek, long-lasting finish. Perfect for boats and RVs—highly recommend for a showroom-worthy look!

Incredible value for money! Smooth performance, stylish look, and user-friendly features. Arrived earlier than expected. Impressive attention to detail. Will definitely repurchase and share with friends!

Experience the incredible high-gloss shine this polish brings to fiberglass and gel coat surfaces. Effortlessly removes scratches, enhancing your vehicle's appearance. Note: not suitable for deep cuts.

I was doubtful that this product would work any better than the regular one but it really was different. Used on a 2004 Fiberglass class B motorhome and it really shined up the dull surface. I think when I do more coats it will even look better. Very pleased.

This works really well. It helps get rid of any scratches in your car and it shines it. It wont work for deeper cuts.

This stuff says it's for fiberglass and gel coat. I wouldn't recommend using this stuff on a automobile as I have read that others have used on their automobiles with bad results. Use the meguiar products made for automobiles. And for dull fiberglass or the gel coat. I highly recommend buffing first before applying the polish. I've tried applying this to a faded gel coat/fiberglass. It will absorb it up. It will work good on a new gel coat/ fiberglass boat RV ect.

My car is almost 20 years old and the age is becoming increasingly noticeable in the paint. Many water spots are so old that they’re permanent, but this product did a good job of removing most of them after laying on this stuff heavy on the hood of the car, letting rest for a few minutes, then wiping down with microfiber.

I was a bit skeptical to start. This made me a beliver. Very little work, easy cleanup, follow it with a spray wax and it looks like a million bucks.