If you find your ball in the woods, it is unplayable. If a professional finds his ball in woods, not only is it playable but he can hit it onto the green.

Sam and Harry are playing one day. On the first hole, Sam hits a wicked slice into the adjoining fairway. The ball hits another player right between the eyes and he drops to the ground.
Sam and Harry rush over to the prostrate man and find him unconscious with the ball laying on the ground between his legs.
Sam screams, "Oh my God, what should I do?"
Harry replies; "Don't move him. If you leave him there he becomes an immovable obstruction and, according to the rules, you are allowed a drop two club-lengths away."

One of the biggest problem for players with high and middle handicaps is aiming.If you want to aim right you should choose correct side of a tee.For example water hazard,out of bounds or bunker is on the left (like on 9th hole).The best place on the tee is left side, because the faraway looks wide and it's much easy to hit it.So if some trouble is on the right side (like on 6th hole) it's better to put your ball on the right side of the tee.