Wyndham Garden Washington DC North/BW Parkway

If you're really serious about tracking your game, this system is for you. Attach the sensors to your clubs to get more information about how you play than you imagined possible.

This caddy on your wrist knows distances for over 42,000 courses. We doubt that Bones Mackay can even claim to have that much knowledge. And the Approach S12 is a bit cheaper than hiring Bones.