Not sure if this was directed at my question but yes we do selftoss and its getting better as well.
I watch the boys swing in the cages and its inspiring to see the explosion they have in their swing. Most of the girls I coach dont have that.
A few girls I worked with have had an issue like that. Their swing was a "swing" - a long, slow-tempo, arc. I tried to instill in them not to "swing", but to "hit". Punch that thing hard! Part of the equation is making sure their mechanics are creating the resistance/tension that assists in being explosive.