I'm going to respond and hopefully I don't show my age
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Is it on the rise? Hmmmm not sure when speaking to some of the older high level orgs. I can still remember watching games played by Lasers Aqua, Wolfpack and Stingrays and those teams were absolutely loaded. So good that I'd put them up against any of the rosters today and would bet Aqua would win 9 of 10 match ups. You think you see speed and power now but Aqua would run most teams off the field.
I think Ohio is getting noticed now more than anything. You have better staffs and individuals who focus on getting kids seen. Its an incredibly important function and one that needed development and has made strides. The more Ohio kids get signed makes it appear that Ohio is indeed getting better. Kids knowing that college scholarships being awarded to Ohio girl influences them to work harder and get better.
Without some of these older generation players getting a chance and proving it on the national stage has made it feasible to today's Ohio athletes. No disrespect to the younger players but some of them could use a history lesson on why the college coaches started coming around in the first place.