Has your snake (any kind) ever fished a f/t rodent out of a bowl of water?

[Bogertophis]

...A foraging exercise? I've got a pretty good idea how that would go. I've tried it. Wiggles would find it almost immediately and, unless he was very hungry, ignore it. Children's pythons aren't natural foragers. In the wild, they will eat carrion if they come across it, but snakes in the wild get a lot hungrier than our pets do.

No, it's not exactly "foraging". Try showing him the food when he's hungry & ready to grab it, then drop it in the water bowl near him (assuming that he won't drop it there on his own like my TP did), & see if he sees & goes after the food in the water. It's about being able to recognize it even when the scent is covered up by water, & it's not being wiggled for attention.