Really simple way to aim your light. Go out at night. Find a nice straight country road with very little traffic. Switch to high beam and adjust the light til' you can see as far a possible (while sitting with most of your weight on the bike. Do it 2up if you usually ride with a passenger). When you switch back to low beam you should then be able to see only a couple of hundred feet ahead. Works for me. I have HID installed and have yet to get flashed.