Startup Idea : Application for gulf players

I think about developing an app that will determine golf balls location. People that play gulf use binoculars to determine where their ball is. Sometimes they lose it on gulf field (and will never find). The application will show an owner of the ball the right location of the ball and will give the tips what to do (to take another ball, to use some special techniques of the game etc. The Application should have a plan of all european gulf fields and also give advices and elements of social network. A player can show the score of the ball, the striking distance and to make a record in this field and compete.