Thanks for playing and providing some feedback!
I agree with you, I would prefer to nudge players to swinging into the boss as a tactic. I'll see what else I can do to make the mechanic more interesting!
Hm... What if smacking the boss' face with a yo-yo was nerfed a bit more? (Less damage + hitting the boss' heart doesn't stun/ slow them down)
Also, I had plans to add some more spinning-based attacks + specials, so definitely something I would like to release in a post-jam update! :D