I honestly don't really know much about this game as a speed game at all. I was casually playing through in Hydrocity zone 1 when I accidentally zipped.

I got hit by this thing, except it was more to the left and I was sent to the left https://gyazo.com/5e5c5c03fa8c588124859bb591c1a88c

And I landed right here https://gyazo.com/a5c8cd55ead1ef372520f45d1495013c
Then I was stuck in the wall and I could press left/right to make the camera move a lot, then I got zipped through the level. I died shortly after because I ran out of air and I didn't get sent flying through the level right away.

I don't know if this is known information or not, but I wanted to post in case it could help.

I was playing on the SEGA Mega Drive & Genesis Classics game on Steam

Yeah i found a zip in hydrocity act 2 while messing around with the first pipe. I knew that pipe can put you in the wall, so today i started act 2 and got crushed to reset boundaries, and messed with the pipe. Sure enough i zipped.

https://drive.google.com/open?id=13geb1QnvUHVzCSt76-xQBsb0jHS1ahZm

Don't know if this is useful or not, but its there!

SinnoSonic, I use this trick in my run... And I'm probably not the only one
Also it's the strat you'll want to use if you play with Knuckles.