This here is the most annoying minigame the series if only because it is required to access all the Mirage Arena missions. I hate it so much and I hate the Mirage Arena's ranking system even more.
It's not that hard. The only difficult course is the last one if you don't make a left at the beginning. The board game takes so much longer and is more of a pain.
It's just that I have to do it that's so annoying. Command Board is alright because at least that helps me level up my commands and stuff. Rumble Racing just feels tedious and I have to do all the courses before I can do them in the Mirage Arena where I need them.. Oh well. At least I only have one more to go.