You can basically walk on water (I will refer to it as Jesus) with a boat

If you are in a boat and go off of a high surface, then exit the boat just before hitting water, the boat goes under water and allows you to Jesus over the boat. The video file of me doing this was to big for the attachments, so I made a download for it:

https://www.mediafire.com/file/t78uyfjmrd5mg47/Minecraft_boat_jesus.mp4/file

this may affect 1.16.4 or other versions, but I haven't tested it.