He specifically walked on water during a storm, and assuming he wasn't violently moving up and down, he was moving independently of the water, so i expect he would stand still
Nah, in two of the three Gospels that contain the story, the storm only calms after Jesus gets in the boat. One of them adds a bit where Peter walks out into the storm to meet him. In the third, the boat is just… instantly at its destination once Jesus boards, with no mention of the storm calming.
You might be confusing the separate instance of Jesus sleeping in a boat during a storm and commanding the waters to be still after the disciples wake him.
I suppose in theory, earth-based time travellers would need to quantum-lock to the earths magnetic field so that when they travel in time they dont end up in a random point in space where the earth was or will be when they departed.
I mean do you think if you stood Jesus on a bucket of water and moved the bucket would he move with with the water or only when he comes in contact with the walls of the bucket. Simple test whether he is water locked or just hovering.
Depends on the strength/type of water walk spell used. Some Amazonian tribes specifically use the 'conveyor belt' method to travel quickly down stream for trade, but only use the stationary method if it makes sense to do so.