I saw George Robert's seminar at the Malbrough fly show this winter. At the end they gave out copies of his 25 page article "Essentials of Distance Fly Casting," which originally appeared as a 4 part article in "On the Water" magazine. This article described George's technique & had an excellent section at the end that had drills & exercises to do for each part of the cast. I used this article to practice this winter into early spring & it really helped. I'd say my casting distance has gone up ~30%. I would bet that the Class from George would be very good, he explains things in very understandable ways. I've also heard that his videos are excellent.