I won a bottle of BTS a couple of months ago but just got around to using it last month. I used it for the first time & noticed how easily it went on & wiped off. The boat was already clean so I did not expect much but I did notice it made the surface smoother as well as a little shinier. I have since used it after several trips & now, the scum lines on my boat from our wonderful dirty water lakes, is a lot less noticeable & what is there will wipe off a lot easier simply using a wet rag. I plan to keep using the BTS a few months & report back with a little more. I can tell you already though, the surface of my boat is a lot smoother than it used to be & much easier to clean up!