David Ogrin is the Owner and Director of Instruction at the David Ogrin Golf Academy New Braunfels, TX. DOGA offers individual lessons for long term students as well as programs for all player types. Birdie Basics ages 3-6. Operation 36 ages 6-13. Operation 36 for Student Athletes ages 13 – 18, Get Golf Ready for Adult Beginners and Stay Golf Ready for players already in the game.