Used the Thunderstruck today.

Shot 236, 201, 205 for a 642. First game, I left a stone 10 in 10th frame and just missed picking it up by a hair. It should have been a 247. Last two games, I bowled good, just didn't have the pin carry. Left too many stone pins to count. Just one open frame in the last two games. Guess I should not complain as I did pick up my spares and threw the ball good. Also shot over average.

Cumulative overall average in all my leagues : 44342 pins / 211 games = 210.15 average.