#3
No acknowledgment at the first tee
For example
Player #1
Hello good luck play well
Player #2
Same 2u bud
Player #3
Have fun y'all
Player #4
No comment
#2
Sends you a friend invite after the first shot
It sort of says I may not finish this round but let's be
friends
I accept all invitations but if you don't finish
I'll delete you later
#1 way to spot a potential quitter
There average is lower than their best 18 hole score