I attended Rick's two day course several years ago, and a combination refresher/hog hunt last year. His courses are the best thing that has ever happened to my shooting.
The thing is, you really have to pay attention and remember what he says. Later on, I would begin to mix in things that seemed right to me with his method, either because I forgot what he taught me or because whatever I mixed in seemed like it was the "right" way to shoot. That's why I needed to attend the refresher course
Rick teaches the dead release, and you can't mix it in with what you know about the dynamic release. To paraphrase Howard Hill: "Boys, make up your minds if you want to shoot the dynamic release or the dead release, because they are two different things."
This is not to say that Rick's dead release is the best thing for all people; it's probably not. But the worst thing is to try to blend it in with whatever other shooting methods you may have learned.