Traditional caddying entails the player and the caddie walking the course together. When on the green, the caddy is in charge of carrying the player's bag, cleaning the clubs, and washing the ball. He also walks ahead of the player to find their ball and measure the distance to the pin and/or hazards. The caddy is expected to know the rules of golf and be able to communicate with his player. In addition to these duties, a caddy may have other roles including those involved in cart maintenance or driving, club selection, and providing general support to the player. Some caddies become qualified coaches who can give advice on playing techniques and share their knowledge of the game with their players. The responsibilities of a caddy can vary depending on the type of event being played. At the low-level events usually found at local clubs, the caddie may only be responsible for measuring the distance between holes and keeping track of how much money has been placed on each hole. In higher level events, caddies may have additional responsibilities such as supplying players with towels after they have washed themselves off from the sand trap or mowing the fairway before play begins. Caddies are important members of the golf team and should be treated with respect by players and coaches. They should also be paid adequately for their services since this is often an important factor in attracting good staff.