This may seem like a trivial question however i can assure you that it's a real one. How can I tell where the 30', 35', 40', etc. mark is on a lane? When looking at oil pattern sheets and it shows the length of oil is 35' for instance how can I tell exactly where the oil stops so I can figure out where my ball is going to begin the hook.
Are there markings or anything on the lane to give a bowler some clue as to where these distances are?