The rules don't seem to specify this clearly, but are you allowed to have a partner when speed running this game? If not, can a separate category be formed for doubles?

no

I have a 30:08 ACT while playing 2p with another guy who's near my skill level and we threw items at each other the entire time

On the speedrun.com categories, you can't. Though, there is a specific leaderboard for co-op categories that can be found here: https://docs.google.com/spreadsheets/d/1VB43365LQiPfFaPNg4VhLfDG0Y-D1J58qmiaiKOwrFI/edit#gid=871895105

When's the co-op boards coming out? I'd have thought that'd be a no-brainer for a game like this. I'm very surprised those boards don't already exist.

Because it doesn't add anything special to the game. You just have 1 guy hopelessly wiggling the stick left and right and the other just plays as if it's single player

Still having Co-op for even a meme category would still be good cause it does add a little bit of an element of surprise and would be pretty fun to mess around with

Co-op is fun to do, it definitely does add to the game. I think it should be a category. Reee at me all you want, co-op is super fun to run and it's what got me into the game in the first place.

Not to mention that no one even updates the meme leaderboards so they pretty much don't even exist.

I still dont understand why it dosent exsist .. Cant you just open up the category for the People who want to run with their Friends for fun ? even if playing coop dosent add anything magnificent to the Game, people should have the opputunity to mess around with it. <3

Feel free to mess around with it, but it doesn't have a spot on these leaderboards. It's non competitive, seen as a meme, and if added should be added after 50cc, 100cc, and mirror get added.

However, I don't plan on adding those until we can import the leaderboard from cyberscore and also for some reason have switched to IGT.