The Blind Spots: Behind and upwind of every kiteboarder is a large blind spot where they cannot see and where they do not normally look. This is made worse by kiters using helmets which may reduce their peripheral awareness. Also salt spray in the eyes, glare off the water, and water splotches on "sea specs" can contribute to the kiter's reduced ability to see their surroundings.

Out of the Blue: The other place kiteboarders rarely look is above. Before you turn, or jump you should look above you to see if there is someone's kite flying directly above you.

Turn for the Worse: If you ride along close behind someone, they may not see you and might suddenly turn in front of you and into your path. To prevent collisions of this type, try to have an awareness of the other kiter's blind spots, and let them know you are there with a friendly "hoot". Or better yet fall back far enough so that if they do suddenly turn, you will not get hit.

Too close for comfort: When riding in any situation distance is time, meaning the more distance you are away from something the more time you have to avoid it. That goes for other kiters too. Do not ride close to other kiters in case they have a malfunction, or need to maneuver. especially when passing several kiters going the other way, you will all need room to fly the kites and keep a safe separation too. Try to anticipate when someone is about to turn, or jump, because they will need even more room to do this. So don't crowd other kiters and try to stay at least one kite lines length away from each other at all times.

Look before you leap: Now that you know about Blind Spots you should make an extra effort to look behind you and upwind when riding. In WW2 fighter pilots used to say "Check you 6" (6 o'clock), which means "look behind you". This is good advice for kiters as well. I go one better, before I turn, or jump or do any maneuver, I always try to look in all 6 directions: Ahead, Behind, Left, Right, Above & Below  me.