I'm giving this a 4 because it really is the most deceptive false shuffle I've seen. Generally, I
have absolutely no trouble spotting a false shuffle, but in the hands of the right person, the
bridge riffle is a real fooler.
The problem is that, for my hands at least, this is far
more difficult than any other false shuffle I've attempted to learn. And what's even more
frustrating, when you do this badly, you end up riffling the cards all over the floor. It's really
hard to maintain the motivation to learn something when each attempt leaves you having to play
52-pickup.
I just think it needs to be clear for anyone who is thinking of spending $25 on this, this skill, while well taught, is very difficult. So, if you're a beginner, you might want to think about your commitment of time and frustration that this will require. I say this because there is a whole lot of other magic here I can buy with $25 that would be much more fun to learn and confidently perform.