Print upright on bed for best strength and accuracy, put the arrow marker at the top. I added a single support for the bottom tab that sticks out, and a brim for good adhesion. 

Otherwise, standard PLA works well for snapping onto a standard golf club grip. Can be scaled to suit different size grips. Enjoy!

Right and left handed versions in the files. 

***Update - added midsize grip (115%) left and right 

Like my work, shout me a coffee to fuel my next design here: https://ko-fi.com/gbombadon

Commercial license with "Carbon Tier" membership available for this model here: https://ko-fi.com/gbombadon