DeepseekerADS pretty much summed it up. Situational awareness is the key. I swing my metal detector with headphones on in (grizzly) bear, wolf and mountain lion territory. For every few seconds I swing my detector, I spend equal time looking around me. I get on a buddy of mine about this, as he's like a kid in a candy store with a two second memory when he's detecting.
I've also trained myself (muscle memory) to deploy my quick release knife that I keep in my pocket lightning fast and can deploy my pistol cross drawn in a blink of an eye, no matter what I'm doing while standing up right or kneeling down .
It's well worth practicing movements several hundreds of times to gain these muscle memory acquired skills, even if it is with your plastic digging scoop. It could save your life!