Call out "hey Milo" repeatedly, lying in wait for the potential Milo to cast their eyes in your direction. Of course, this kind of "Snapper-Camping" is what counters were created to prevent, but you can always try.
Stand next to someone your Milo victim is likely to look towards, and shout "hey Milo" just as that person starts to turn their heads.
Tap your victim on the shoulder before exclaming "hey Milo".
Call "Hey Milo" and then leap into your opponent's range of vision!
Make sure you say "Oh Snap" as soon as possible when your victim turns their head!
Prey on people who are holding something, so that (if worse comes to worse) you can pull off a quadruple counter.
FOR MILO'S!
Close your eyes whenever you hear the shout of "Milo".
Start saying "that's my name, don't wear it out" BEFORE you turn your head to face the snapper.
Think of what counter you're using next while the Snapper makes advances.
Avoid carrying things around.
EXPERT TRICK: carry around turtle food wherever you go, to keep anyone from using a quadruple counter on you.