The house I bowl at went from a giant wall to a tough shot
Just prior to ABC stepping in, the house had 2/3 300 games a week and an 800 every other week. It was stand left and throw right. Keep the ball inside the first arrow at the breakpoint and the ball was coming back into the pocket. It was not unusual to have 4 boards at the arrows to hit the pocket.
Now they oil 1 to 1 for the first 18 feet. At about 25 feet the oil ratio is about 2/3 to 1 and at 35 feet it is 4/5 to 1. Basicly don't miss right or left up front, but you have 2 or 3 boards at the breakpoint. The breakpoint is around the 10 board.
This is a 40+ lane center with hundreds of league bowlers. Since the shot change 2 months ago, no 300s or 800s. In their 16 team 1000 average league, the high series pot for some weeks was won by 650. On a good night, there may be a couple of low 700s. You have chance at the high game pot with 230s.
People struggle and their new average is 20+ pins lower, but I have seen people that go to the manager and tell him that they wish he would keep the shot tough.
A case for accuracy instead of power. You don't need a wall to keep bowlers happy.