Works -- sort of
November 11, 2014
I must be more clumsy than most. It takes more coordination than I expected to hold the frame, turn the ball, use the marker, and scream all at the same time. And then the mark was nearly gone by about the 10th hole. The ink doesn't seem to appreciate a wet course.
Pros:Marks ball with line
Cons:Needs more hand dexterity than I have.
Line does not last an 18-hole round.