Below is a copy of an email I received today. I found it astonishing that a fellow diver would openly condone dumping scuba cylinders into the lake to have something to see? For the love of life. Have a look at his rationale:

What were you guys thinking when you brought up the picnic table and the empty cylinders. They were not harming the environment, if anything the cylinders provided habitat. There's only so much to see in Lake Simcoe and you took our stuff. This reflects quite poorly on your business. I am not the only person. I spoke to several others who feel the same. What's next? Are the concrete blocks and line causing damage to the environment? Please don't touch our stuff, we put it there for a reason and isn't hurting anyone or anything.