It was great, very informative. I will probably go back to him in a few months once i get past beginner level in the shirt. I hit 475 in my single ply F6 relatively easily. Wasn't a joke, but not hard. I apparently need 3 and 4 board work. I locked it out easily but was a little slow in the middle. It took about 455ish to touch. Good times, lol. I didn't even get into my 2 ply F6, and denim, he said the grooves are the same it would just take more weight to touch right now.