Absolutely the Best product I have ever owned. Before I bought this umbrella, we use to put those pop up roofs they sell at Walmart. Tide would raise and shift the boats leaving pop up far behind or almost submerged. This umbrella stays where ever the boat moves to. And you enjoy staying near your boat where you can entertain and enjoy your music. Also, it provides excellent shade while grilling on your platform. Honestly, its the Best investment you can make to enjoy a day under the sun while being in the water. I just sold my boat and will definitely buy another one for my new boat. Every boater should have one of these on their boat. Trust me -as everyone that I have meet that has one- has nothing but positive things to say about them. Bottom line! Absolutely love this umbrella... Thank you Umbrellas 4 Boats for this fantastic invention.