Hi Lex,
A friend gave me a bottle of Seapower a few years ago and I tried it on our
Casita. I remember that it was very easy to apply, and very easy to polish off once it dried. This was important at the time, since I was doing the job by hand. I'm not sure how the durability compares with other brands; that's pretty hard to quantify. I've since bought an electric buffer, and am using Maguire's number 44 and 45, which I've seen recommended often on this forum. Hope this helps!
Dale