Watched the first episode of the Game Grumps Vs. series for this. (It's in the relevant link.) All I have to say is... they're not very good at this game.
That aside, the ROM hack looks pretty great. An alternate download without the bloat of the PDF would be nice though, since it's just fan fluff and a walk-through for the 152 holes. Don't get me wrong... It's very clear that a lot of love went into making that faux manual and strategy guide, between the art, screen shots, and story. But the game itself tells you the story and you shouldn't need a strategy guide unless you're absolutely stuck. And of course... sometimes, you just want to play a ROM hack. Not wait around for a download to finish or wade through supplementary information.
A version of the hack for other regions of the game might also be nice, since this one only works on Kirby Bowl (Japanese region), according to the hack info.