If you have a bowler that is switching hands, simply create a new bowler and copy the personal information. Use a –L or –R at the end of the bowler’s last name to designate which hand that the bowler is using.
Ie. Dwayne Dibilee-R
This bowler will be starting fresh as a new bowler and will properly follow the rules set as if a new bowler is joining the league.
Move the new bowler to the roster position on the team and move the old to the bottom (or remove and place on the sub list).
Enter scores for each week that the bowler is using the new hand with this new bowler. If the bowler returns to the previous hand, then simply move the old bowler back and put the new into the sub list.