Darkness is a social problem, and inclement weather a textile problem, but hilliness might be a problem lessened by getting them on a bike while they're still small enough to bounce? <a href="https://www.youtube.com/watch?v=rVFu2OgWQBU&t=120s" rel="nofollow">https://www.youtube.com/watch?v=rVFu2OgWQBU&t=120s</a><p>Fish may not need bicycles, but these humans are throwing tricks I'd never attempt: <a href="https://www.youtube.com/watch?v=D424_41uh3E&t=2422s" rel="nofollow">https://www.youtube.com/watch?v=D424_41uh3E&t=2422s</a><p>I never even managed a bootlegger reverse (although attempting to learn did teach me how to turn flying over handlebars into graceful dismounts), yet these women are getting over a meter of air: I'd call that enough to be chasing the clouds away.<p>(unlike netball, which is a female-dominated sport with the recent addition of mixed [and even male-only] teams, it looks like cycle ball started out mixed[1] but these days, from what I can find on YouTube, is played segregated[2]:<p>[1] <a href="https://en.wikipedia.org/wiki/Cycle_ball#/media/File:Liebig_bike_polo.jpg" rel="nofollow">https://en.wikipedia.org/wiki/Cycle_ball#/media/File:Liebig_...</a><p>[2] <a href="https://www.youtube.com/watch?v=ib0DhW1qGrU" rel="nofollow">https://www.youtube.com/watch?v=ib0DhW1qGrU</a> )