The hints for Play Ball are now implemented. If you go to the Play Ball! page, you will see a button for them next to the answer checker button. The hints are categorized, and go from gentle nudges to explicit instructions.
I had more trouble than I expected implementing them due to some of the vagaries of WordPress, but I’m pretty happy with the final results, as I can leverage it easily for other puzzles.
Also, a second set is well under way, so stay tuned for that!