hi Richard and Colin, that's certainly twisting my words. I said that a fuse is at it's best in a constant current system. I then said they'd are less good in repeatedly loads and polarities. I didn't expect that you'd focus on the changing polarities bit, which obviously doesn't apply unless the fuse is between the esc and motor. Oh hang on a minute, that's just what some people do isn't it.
Really, this is getting a bit out of hand, unpicking replies that are at varience with your own preferences isn't the usual forum way. It might be better to notice that earlier I said that anyone who needs to ask about fuses should always fit one. Since you also want to bring up experience, yes I have, lots of it.