Grew up on the farm and it was common for snakes to be sheltering under sheaves of hay (yes, I'm ancient before hay was baled.) Dad used to just flick them (snakes) away with the pitch fork and tell me we don't kill them because they help to keep the mice population down.
Got the "gold fever" in the 80's and rarely saw any snakes until my partner got her first detector. Then every trip somewhere along the way I would hear, "Peter, SNAKE!!!!!!!!"
One trip she called and came running and said there was the largest Mulga Snake she had seen. We returned to get a photo and she said, "It was here somewhere." Then I saw it, not 2 metres away camouflaged in the grass.
We back tracked and never did anything as stupid ever again!
As someone has already mentioned, with the coil swinging in front of you, banging rocks etc the snakes are usually long gone before you sight them.
We wear gaiters but mainly to keep rocks out of our boots and grass seeds out of our socks.
As Davent mentions, keeping hydrated is the number one priority. Using my trusty old sewing machine I attached 2 litre Camel Backs to our harnesses.