I have a weird history with catching snakes. I once caught a viper in a fishing net when I was 6. Long story short. I told my dad there were snakes swimming in the small pond I was trying to fish. He didn't believe me, so I decided to catch one. I did, walked up to my father, presented the fishing net under his nose. To which he responded by falling backwards on his chair telling me it's a viper, in a distressed kinda way.
I would however not suggest to catch them with fishing nets. :P
As a teen I once hunted snakes in Italy using a stick and a fishing line with a noose. Which was very effective. People on animal planet catch them by pushing their heads down with twigs and then grabbing their heads. I never really thought that was a smart way to catch them though. What if the twig brakes, or the snake gets out underneath. Noosing them seems safer to me. :P