A few minutes calculation, however will show that those few pins remaining can make the difference between the 120 average and a 190 average. 190 specifically, because if you consistently knock over nine pins and then make the spare yo would score 190 - without a single strike.
In Tenpin Bowling the idea is to knock over as many pins as possible with your first ball - if not exactly right you are going to leave pins standing. No spare is easy to convert but their are very few that cannot be picked up with a well-placed ball.
1. Bowl the same type of all for every spare that you bowl for a strike build up your consistency of delivery.
2. Aim to hit the pin nearest you first.
3. Aim into a group - not across it.
4. Only attempt difficult splits if you are very confident - or in a desperate need of a conversion - one pin over is better than two missed.
5. Learn to identiy pin positions by their number.
6. As a general rule shoot left-handed leaves from the right side of the lane and right hand leaves from the left side of the lane. Never aim along an edgeboard.
7. The best line of attack for particular leaves are shown on the following pages