I'm trying to run any% and 100% with a friend at the moment, and I was wondering if there's any information, guides or communication channels people use outside of this forum to share strategies. Does everyone figure these things out by themselves through watching runs and reverse engineering?

As an example of a question we have at the moment; we assume coop bike skip is impossible because we don't see anyone doing it. We're curious what the technical reason for this is. Is it just because you'd have to skip with both bikes and the second one is too far?

Nah, as far as I know nobody's made a discord or website for Battletoads strategies. It's just this forum.

As for co-op turbo tunnel skip, I'm almost certain there's a set of inputs to get it, we just haven't found out what it is. I've done it once on accident while searching, but could never recreate it and have no idea what I did.

Also, there's a similar skip that exists in level 5. Same deal, I've made the skip happen once but I have no idea what I did.

I've given up at both levels. But the search can continue for whoever's interested in looking at it. The sky is the limit on what you can try, and I guarantee we haven't tried everything.

Here's an example of the surf city glitch with TAS inputs:

The initial setup is easily reproducible. Simply have one toad sit still and the other grab a board and bounce left between the logs and water. Once you're in the glitch screen, the TAS skip is what occurs by simply spamming up+left+down+right+A+B+Start+Select every other frame (which is also what the TAS does in the turbo tunnel.) While this isn't possible in real-time, I'm confident there must be a web of consistent real-time inputs that can exist to navigate there. We just have to find them.

Thanks! I'm already mindblown about the bike skip, I had no idea there was a skip in surf as well. Our PB is not very serious but we're definitely going to do some research now that I know these are theoretically possible.