I can tell you first hand that when your THS bowler bowls on theses conditions, its not only being able to be consistent with hitting the same mark with the utmost consistency, but you also have to take into play of how they play the lanes. I have seen it way too many times the people that bowl in these leagues do not have a clue on how to play them. You have people spraying the ball everywhere "trying" to find something. If you ever watch a PBA tournament (not tv finals), most likely you understand what I am talking about. Yes, the shot is more, if not a lot more difficult than your THS, but with bowlers playing everywhere on the lane since they may not have a clue on how to read oil patterns, theses patterns turn into something quite uglier than they really should be.