Try size: 640 x 640 or 512 x 768 (SD 1.5) / 1024 x 1024 or 768 x 1024 (Pony)
Weights: 0.9~1
Clip skip: 1
Training material from bing
Pictures from CalicoMix 8.5 and KntanMIX XLpony
Note (SD1.5): If need to increase the probability of the ball appearing, please add "ball" or "golf ball" (sometimes out of control).
Note (Pony): The success rate of Pony is lower than SD1.5 with holding golf club.