Yay, another snorkel thread!!! It’s already been a month or two since the last one. Time for another!
Joking aside. No, there are no snorkel rules outside of a few very localized exceptions (none being on dive boats that I'm aware of). Some use them and some don’t. Some carry them in a pocket and some not at all. I’ve not carried a snorkel while diving in over 600 dives. Others have one on every dive. To each their own.
I would have simply told the instructor that if they feel one is required on every dive, than by all means THEY should bring one on every dive. Then I would have walked away.
Joking aside. No, there are no snorkel rules outside of a few very localized exceptions (none being on dive boats that I'm aware of). Some use them and some don’t. Some carry them in a pocket and some not at all. I’ve not carried a snorkel while diving in over 600 dives. Others have one on every dive. To each their own.
I would have simply told the instructor that if they feel one is required on every dive, than by all means THEY should bring one on every dive. Then I would have walked away.