by Gary HeinsSki-Teaching similar to Ranch Horse-Training. Tired of not reaching your potential as a skier or teacher? Heinsian DOWNHILL SKIING is written by a guy who's been down in the trenches with umpteen-thousand real students, while being surrounded by ski-bums masquerading as teachers. A great book for students and teachers alike. GARY HEINS is the first to offer the true definition of Comfort Zone--this book is the new yard-stick all ski lessons should be measured by. Thick and Illustrated.