Dear Ramy, I too thought that since many instructors do not own their own glider their experience might be limited to take off landing and basic pattern work. Well, that is not true. Not all instructors are created equally. I am licensed to fly everything except hot air balloons and blimps, I have always been able to find an instructor to teach me something new. When I first started to fly the Minden area I took a five hour session with Carl Herold (I do not remember if he was a licensed instructor, but that was not important). Want to learn about ridge flying book a flight with Tom Knauff, at least 13 years ago you could. I took my commercial helicopter check ride with Boeing's chief test pilot. If you want to learn you can ALWAYS find someone better and more experienced than you. One post commented that instruction was for inexperienced (I might be paraphrasing or worse mis-paraphrasing) but I respectfully disagree. I have 7,500 hours in everything from open cockpit biplanes to WWII fighters, gliders, jets. I continually train in whatever I fly. Yes, a few times I did not learn as much as I wanted, but that did not make me stop seeking out the more experienced. I took a very expensive mountain flying class in helicopters and ended up teaching the instructors much, so I got them to comp me a day in the water dunk tank.