Can you stand on it, and does it therefore appear you’re walking on water?
;-)
(With apologies in advance to my Christian FRiends...)
Yeah. Trouble with that theory is that Peter, James, John, and Andrew were all professional fishermen with decades of experience who we can assume know the area very well. The Sea of Galilee is actually fairly small: you'd reasonably expect all the old salts to be able to locate shoals, reefs, sandbars, rock-piles, channels, etc. Right?
They were smart. They all knew where stuff was. They weren't a bunch of credulous tourists.
I rest my case :o)