...a lot of button mashing for very little DPS reward?

I mainly play samurai (easy rotation) and dragoon (not so easy rotation) and I love them. I want to love ninja, but even in a Trust on Holminster, I'm #4 in the DPS list.

In the words of Mr. Biden... COME ON MAN!

Is there an ELI5 guide to ninja out there that isn't a youtube video? something I can print out and muscle-memory it like I did dragoon?