Well like Simon said:
"And you can almost always go and strip a finish off a guitar/bass and start again if you want to. I have. It's hard work, but getting a much better finish the 2nd (or 3rd) time around is very rewarding. "
I'm just one of those people who spends 2 months faffing around for something that takes 2 minutes to actually do. Just go easy if you are going to polish the satin finish. A lot of satins go gloss with wear. Where I work they use a 2k poly clear as a satin. All it takes is a light rub with a grey scuff pad and it starts to take on a shine