You could do your shallow night dive at the Tugs Diver's Den which would be on your own time not the charter operators (just need a buddy). The Tugs are right in town, there's a gearing up deck and steps, near the parking lot, it couldn't be easier.
There is usually a 9 am two tank dive, then a 1 pm two tank dive, so you can get your other dives by choosing what depth wrecks you want to see:
Divers Den
G+S Welcomes Walk-Ons
Good wreck descriptions on the Divers Den site.
There are now three dive operators in Tobermory, the new one at the south end of town
Tobermory Aquasports
While I've been on Toby charters that had divers wearing doubles and divers in single tanks, there seemed to be no problems finding a buddy that matched one's diving skills in regards to doing no penetration/tech dives if that was what you wanted. Note that wearing doubles does not automatically mean tech diver, There are Great Lakes divers wear doubles and are not tech trained.
The "caves" should probably be called "the caverns" as the swim throughs are not more than 150 ft long with no daylight. The topography of these caverns: there is a central area that is open to the sky in places, (swimmers and snorkelers access this area when the water's warmer), then there are two underwater swim throughs that go out to Georgian Bay. For me, once was enough, but it is a kind of signature dive of the area.
In terms of penetration, the only one I can think of realistically is the purposely-sunk Niagara II. As Webmonkey mentioned, it has been "sanitized" for divers: open holds, etc. but if you don't have training, why go inside?
If I'm around on that weekend, I might be up there anyway. PM me closer to the date if you like.
There is usually a 9 am two tank dive, then a 1 pm two tank dive, so you can get your other dives by choosing what depth wrecks you want to see:
Divers Den
G+S Welcomes Walk-Ons
Good wreck descriptions on the Divers Den site.
There are now three dive operators in Tobermory, the new one at the south end of town
Tobermory Aquasports
While I've been on Toby charters that had divers wearing doubles and divers in single tanks, there seemed to be no problems finding a buddy that matched one's diving skills in regards to doing no penetration/tech dives if that was what you wanted. Note that wearing doubles does not automatically mean tech diver, There are Great Lakes divers wear doubles and are not tech trained.
The "caves" should probably be called "the caverns" as the swim throughs are not more than 150 ft long with no daylight. The topography of these caverns: there is a central area that is open to the sky in places, (swimmers and snorkelers access this area when the water's warmer), then there are two underwater swim throughs that go out to Georgian Bay. For me, once was enough, but it is a kind of signature dive of the area.
In terms of penetration, the only one I can think of realistically is the purposely-sunk Niagara II. As Webmonkey mentioned, it has been "sanitized" for divers: open holds, etc. but if you don't have training, why go inside?
If I'm around on that weekend, I might be up there anyway. PM me closer to the date if you like.