Yep that's the beauty of using tennis balls, getting any real distance is hard and you don't need a lot of space.
But golf balls are fun

Getting them to in a straight line is tricky.
You won't do it with a sidearm throw

As far as the testosterone goes, it's something in the water over there.
If they held that comp in the UK, they'd be casually strolling back for a sip of tea between hits.