OOC:
Sorry, the lack of clarity was my fault. The pin and bone tube were
"[i]n the water, near a ledge which drops abruptly into the depths below". So a shelf of rock that's maybe only a foot or so in depth before a deep drop-off straight down. That's why I didn't think it unusual that you said Luban was taking his boots off again. On the illustration of the pool I tried to make the shallower ledge lighter colored, and the drop-off a darker blue, but I'll draw whereabouts the items would have been found.
OOC:
Perhaps that changes what Luban would have tried to do.