There's not much I can add to what has already been said, but as someone who looks at flourishes with the eye of a troubleshooter, I'll say this:
A flourish is done the way it is done because the mechanics that are required to do it are there for a reason. And creating a shortcut to avoid a certain knack or prerequisite isn't the way to go.
Practice practice practice. Some flourishes are going to be easier than others. But it all comes down to how much work you put into it as well as having your eyes open to avoiding or rectifying any trouble spots.