""I hear ya danno....
I'm a 1st Mate of a local dive charter. Tourists are good business, but in many cases a danger to themselves & all who come in contact with them.
I've seen all kinds... especially fun are the ones who appear to have gotten their cert from a crackerjack box. Even more entertaining are those who buy thousands of dollars in gear, and flop around like an injured fish in the water. (shaking my head)
Our pre-dive rules for our guests (stated first by the captain & then reiterated by myself):
1. When you hit the water you are responsible for yourself & governing your own safety.
2. When your buddy hits the water, you are responsible for rule 1 AND your buddy.
3. I being your DM, am responsible for my own safety first and then yours. If you follow rules 1 & 2 my job will be easy. I will gladly show you around the wreck & assist as needed.
4. You will begin your return to the boat as a buddy team when the first buddy reaches 1000 lbs. (750 on shallower dives).
5. If any diver returns to the boat below 450 lbs they & their buddy will only dive for 40 minutes or forfiet the 2nd dive without refund. (It creates a bit of 'positive' peer pressure to follow the rules).
6. Any solo divers are soley responsible for their own safety. If you choose to solo dive, we honor your choice; but please understand the risk you are choosing.
7. All solo divers are required to return to the anchor line within 50 minutes. If you are asked to assist and you comply, your dive is free. If you do not, we honor your choice. Simply sign "no."
8. The ride out today is free. We are only charging for the return trip.""
If the dive is deep the 1000 (or more) psi thing sounds good as a point to leave the bottom and use that gas for precautionary safety stops but seems artificial as a rule. N