Thanks for feedback!
I initially thought to make target ticks larger, but I then discarded the ideas because I wanted the player to come up with their own strategy if they needed. And also optimization is not main goal if you can win without it so I thought not to break the symmetric look for that.
Anyway here is a strategy you can use.
"Notice when the hand gets slower, for example if hand gets slower when it is about to reach 4 you know that next target is 5. If you can't reposition 5, try 6 as it will be the next."