The "League" function is iScore would let you do this. Each game can be assigned to one or more Leagues and stats can be calculated for just the games in a specified League (or combination of Leagues). It's a very powerful sort tool.
Jay Weaver had a good blog post a few months back on how glove position can lead to thumb injuries. It's not always about the padding in the glove.
October 2012 – Tip of the Month | The New England Catching Camp
Catcher's are a unique breed and tend to self-select. Start slowly. Catcher is a physically and mentally draining position. It's hot, dirty, hard work and there's no time for daydreaming or picking flowers. For newcomers, just give them an inning or two behind the plate and rotate someone...
I've worked with both and use iscore now. Best $10 I've ever spent. Instead of hours of work after the game, stats are produced instantly. I ended up with iscore because I like its stat package better and found it handled more game variables. Gamechanger gives you some interesting hitting...
Other posters have you on the right path for teams. I recommend Diamond Sports Training for hitting instruction. We have been going there for five years now. Large indoor facility in nearby Sterling with several good instructors. PM me if you want specific names.
Diamond Sports Training
For what it's worth, this is from the NCAA Softball Rules and Interpretations Book
SECTION 22—NO ERROR IS CHARGED
No error is charged to a fielder in the following situations: 14.22.1 When a ball is misplayed because of being lost in the sun or lights, blown by the wind, or if the fielder slips...
Just attended the Be the Best Softball Coaches Clinic in Cherry Hill and Ken Ericksen (South Florida head coach and national team asst) said all his catchers use 1B mitt. I'm just starting to look into this for my 13 yo, but it looks like a growing trend. I'm interested in hearing from anyone...