Ok. This is not intended to be a discussion about a house wall/bumper bowling/wall of china effect on average. This is intended to be a discussion on what style things can help/hurt us on each type of condition.

Here's why I think it'll merit a great discussion...

I have a bad back. I received a pretty serious injury 8 years ago, and it flares up pretty good every now and then.
When it flares up during a THS league or tournament, what I find is that I can still find the pocket, but my carry percentage goes down some, just because I don't stay down with the shot as well.
I'm bowling a sport league this summer, and the back condition really affects the outcome there. For instance, a couple of weeks ago, on the 2002 masters shot that required a straight up 5 board shot, I opened up with a 238 game, and started the second game with X/XX. When I stood up to bowl the 5th frame, my back caught, and spasmed up real good. I ended up that game and the next in the mid 160s. Seems as though my issue of not staying down with the shot was costing me a board of accuracy one way or the other, and although I was making most of my spares, it was costing me in 6 and 7 pin counts.

Anyone else have style issues, release issues, etc, that affect your sport shot performance, but don't detract from your THS scoring?
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All things are difficult
before they are easy.
---- Thomas Fuller