If we're doing innuendo, how about, "Try to make your balls hit the bottom?"
There's also a spelling mistake in the 'Zones' section. 'benefit', not 'benifit'.
And I may as well throw in a grammatical error so that the fun police and spelling police are joined by the grammar police. In the 'balls' section, '...the frequency in which...', should be, '...the frequency at which...'