I have used Sharkhide and am very impressed. I bought a new boat this past summer and immediately applied Sharkhide before putting it in the water. I only applied 1 coat and now wish I had applied 2 because I missed some areas while applying it. In some ways, it was a good thing that I missed some spots because I see how well it works on the areas I hit well. Very easy to apply, just as written on the can and a little goes a long way.
Thanks