[RidgeRunner]

I have never done anything more than rope replacement. Here is what I have studied on and my observations with respect to rub rail replacement..
If there is a job that is near impossible single handed this one is close. So I say two man job. It has to be stretched tight sealed and fastened at the same time.
Depending on the exact type of rub rail selected you may need a heat gun to go around sharp corners at the transom.
Detailers tape works well to help with alignment and to keep the sealant off the gelcoat where you don't want it.
Lots of screwing and glueing.
Rub rail on the Whaler was wavy as can be. AND Huge.