I click left mouse pressed and move mouse ( in my case i have ball which i move ) and move to 100% off meter or how much you wnat to hit , then release then when it comes to white line click it at exact white line so ball go straight.
Also there is red dot on ball which u click to move up ( top spin , ball roll more and work well against opposite wind where all area is fairway ) or down ( back spin - float in wind -ball go up further)
You use backspin even against wind if u want to cross water or rough. Basically backspin make ball go more in air but do not roll after it lands.