That being said, why can't a High School coach in October coach his team in a HS softball fall ball game or indoor league?
I get confused too. Here's how I interpret it.
Why can't a HS coach have a fall ball team:
I think this might be covered by rule 4.8 of the Softball-specific rules:
4.8) In accordance with Sports Regulation 4.9, interscholastic softball coaches are prohibited from coaching their own interscholastic squad members in non-interscholastic softball except for 10 days from June 1-July 31.
Link to Softball-specific rules:
http://www.ohsaa.org/sports/rglts/SB10-11.pdf
Also, I think if you found somebody else to coach them for fall ball, they might be subject to the 4 player limitation discussed in rule 6-5.
6.5) Participating in Non-Interscholastic Programs Outside the Interscholastic Season ?Team Sports ? A member of an interscholastic squad in a team sport sponsored by the Board of Education or other governing board may participate in non-interscholastic contests, tryouts, training or practices prior to, and after, the school?s interscholastic season under the following conditions:
a) The number of interscholastic squad members from the same school on the non-interscholastic squad is limited to a maximum of 50% of the members of a team as defined in the playing rules of the sport. From June 1 through July 31 (in the sports of baseball and softball, the period is the Friday before Memorial Day-May 25 in 2012-through July 31) this restriction is not in effect, provided the squad members have concluded their school season. The 50% limitation is defined as follows for all OHSAA recognized team sports.
I think winter-indoor is different however because it isn't recognized as a non-interscholastic sport. I don't think the HS coaches can coach them, but I believe there is no limit to the number of girls from the same school that can participate. Here is rule 4.7:
4.7) Participation in indoor fast pitch softball is not a violation of OHSAA non-interscholastic Sports Regulation 4.5 if played indoors from November 1, 2010, through February 1, 2011, for student-athletes.
Here is a link to the general sports regs if you need it:
http://www.ohsaa.org/sports/rglts/GenSportsReg11-12.pdf
I'd be happy to hear other's views to support or contradict how I'm reading it.