Mike,
In southwest Ohio except for the finals in tourney games we all do solo for Sow-pitch at all ages.
I have worked more than 5000 slow-pitch ASA/USSSA/NSA games over the years and ejections were only mentioned in men's games.
I still do youth and church league slow-pitch games but have stopped doing any local men/co-ed leagues. I primarily do ASA/USSA/NFHS fast-pitch now.
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Charles Johnson Jr
NFHS Class #1 softball/baseball
ASA/USSSA
Dayton, Ohio
I have been umpiring so long that it was called Rounders when I started.