I do understand the rationale but when I asked them the general requirements, they said that they would like to see ten cold, deep water dives before doing their morning dives. So I asked them point blank -- where should I get this experience then because it doesn't seem like it's going to be with them. If not them, then with who and where? They were quite vague on making any suggestions. I might have even been open to taking a specialty course dive with one of their instructors but they did not offer this option.
In contrast, the dive shop in Brockville did not have such constraints for those certified advance and above. So the way I left it with Diver's Den is that maybe I'll have to take my diving as far as deeper dives goes, elsewhere like Brockville, until I accumulate the ten cold water deep dives before returning to Tobermory for their deeper sites.