Thanks for your kind words! It’s embarrassing that the turning bug snuck through. LOL
Since the most recent update I’ve added a label “Optional” above the crank control indicator. I’ve also made a feature request to Playdate SDK to be able to specify our own text in the crank indicator for exactly the reason you mention: its wording makes it feel like crank is the only control.
In the final version (will be submitted to Catalog; much has already been added!) there will be more detailed instructions in a similar to what I’ve done in YOYOZO. Not everything will be mentioned in the game because I think discovering the depths of controls is part of the fun for the player of arcade games like these. Case in point: you’re quite correct that B does slow you down (you also slow down in the black area, and when colliding with the edge). Also, like with YOYOZO, I will be writing a manual for players that want to know the ins and outs.