This Quad fin beauty came through the post yesterday, and I just had to give it a baptism in the north westerly early this a.m.. It felt about as directional as a single fin to point up wind, plane etc. but what amazed me was how it felt on the wave face. These things are incredible to turn, as loose as a twin fin, but somehow felt quicker. I will try and critique in more detail when I get the chance, but in the meantime if you get a chance to try, I totally recommend it.