What D & SS said about close and slow...........
Even if you don't bow hunt ( My body made me quit that about 5 years ago. ) the same basic experence is had if you forgo the big scope and the long shooting lanes. While its not as hard for me to pop one at 15-20 yards with the rifle it is as dificult to get them that close.
And there is the added bonus of not losing them when I do decide to shoot one.
Last thing......may have said this before......the hogs are the best eating thing in our woods. Don't let anyone spook you about sex or size as all you need to do is gut them quick, cool them down.....in essence handle them like you should handle any game and they will all be good.