Interesting topic. I'd rather go with a sandbagging charge, regardless of the 2-handed style. You may throw the ball however you like, but if the session's results are the base for the handicap (or even for next session's handycap) and the player intentionally played below par - even just out of frustration - I'd fine him. If this is a serious league, his act has been disrespectful against the other players. Call it silly or immature, but he is not playing on his won.

Anyway, regarding averages from different styles, I'd think this would make sense if there are great differences between the styles. I'd inhibit switching in this case, since the sandbagging danger (see above) is too big. A different approach would be to ask players who enlist to define the style they are using before entering league?
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DizzyFugu - Reporting from Germany

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qoute
''He still did not score much, and scored slightly worse in one game''

Reality check,

Are you saying he should have scored higher than his average in that game, do you score higher than your average in every game, know.
So what is the problem.

He had a tricky pattern/match up and was trying to improvise, that sounds like positive thinking, if it does not work who cares, he had a go.

Have you changed hand positions, ball types in the past and they have not worked
do people accuse you of sandbagging for these changes, the answer is no.

Everyone has the right to improvise on a condition if the cannot control it with their normal game or style. (right to left is  a differant story)

Cheers
MB
(No thumb flinger, thumb in sparer)
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Have no fear of perfection - you'll never reach it.....
Beer for the man, white wine fruit based drink for the lady.
Lane 1 for the man, storm fruit smelling ball for the lady.....
(\ /)
( . .)
c(')(')

http://www.bowl.com/articleView.aspx?i=13035&f=1

"While a change was made several years ago to require gripping holes to be covered during a delivery, the current application would still allow a two-handed player to drill a set of finger holes for each hand on opposite sides of the ball. This allows a player to insert fingers from both hands to assist in maintaining the grip and imparting force on the ball.  

USBC has modified its application of the specification to now require a player to be able to demonstrate that he/she can use all of the gripping holes with one hand at the same time. The player is not required to use all the holes in any specific delivery, but they must be able to demonstrate that each hole can reasonably be used for gripping purposes."

You have to cover the holes with your hands during delivery, but you can have a ball with a thumbhole and throw it thumbless two-handed.

Martin710,
the thumb hole has to be in the palm no away from the palm, this subjest has been covered before many times.

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Have no fear of perfection - you'll never reach it.....
Beer for the man, white wine fruit based drink for the lady.
Lane 1 for the man, storm fruit smelling ball for the lady.....
(\ /)
( . .)
c(')(')

I am lost of this thread. You want this bowler to have 2 book avgs because he changed styles... If you started league right handed you can throw the ball anyway right handed you want and etc..  If you start bowling on the left side of your body then you should be made to have a separate avg..  

Another example - If you are right handed and decided to throw a backup ball that is legal...

I really don't believe this bowler was trying to throw off because it takes allot of energy using that style of bowling..  I believe he just had an off night.

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Reality Is.......Working out how to carry the 10, only to start leaving the 7.

Edited on 7/26/2007 12:03 PM

What am I missing in this thread.. The rule book clears states this is legal..  Is this conversation really about sad bagging instead of the 2 handed delivery.. That rule is clear in the US...  Whats the problem