scubamickey
I'm a GIRL!
I really can't overstate how great Keen sandals (pic) are for diving or anytime you are around tanks or near water. They have complete toe coverage. I've had two tanks dropped on mine (on the same day by the same klutzy girl) and didn't even wind up with a bruise. They are also completely waterproof and made to be wet or even submerged.
They aren't cheap but you could get three pair of what your ER visit cost. The only thing they lack is some sort of a fin attachment!
I already have a pair. I didn't think they were that expensive. Besides, my insurance fully paid for the ER visit . I don't think that you realize that the tank fell on my foot right after a dive--I was still in my wetsuit and booties. I'd barely had time to take my own tank off before this happened.
Besides. I was in Bonaire. I would never leave my Keen sandals in a vehicle due to the possibility of theft. I wear them on boat dives for all the reasons you mentioned.