12:19 p.m. on March 23, 2006 (EST)
Kutenay has a lot of experience in the part of Canada you are asking about, so I would consider his advice very carefully. Your comments are rather inconsistent and self-contradictory. You say on the one hand that you have little experience, yet you claim to have spent time wandering around Vancouver Island. You say you only had a problem with fresh water, yet Vancouver Island's wilderness areas have lots of sources of fresh, potable water. I guess I would say that you probably have just enough knowledge to be really dangerous.
A book you should read before heading into the "survivalist" mode is one of Jon Krakauer's early books, "Into The Wild" (no, not Into the Void). It retraces the experiences of a young (in his 20s) man who headed into Alaska with much the goal you state. He did reasonably well for a few years, until he made a fatal mistake. One of the edible plants he was depending on turns out to be edible only during certain seasons and only certain parts of the plant, but is extremely toxic during other seasons. There are lots of plants like this (same plant is found in BC, by the way). You should become very well educated in the plants, their seasons, and their parts. As someone else posted, you should learn which animals are edible (yes, bugs and grubs are edible - some, that is) and which are not. One of the big problems is getting the variety of foods to avoid various dietary deficiencies.
I have to agree with kutenay and the other posters here that your hubris will not serve you well. Even though you are a Canadian, you still have legal restrictions. And by your own admission, you lack significant skills and experience to make a go of it. I would suggest that your best bet, if you are really serious (and not just a troll), is to do a bit of research on people who train people to survive, select one or two, and spend the time (a couple years at least) and money (it ain't gonna be cheap) hiring one or more of them to mentor you. The basic skills you will need include, among many others, finding and preparing food (including nutrition as well as plant and animal knowledge), water, clothing, and shelter in all 4 seasons, navigation, medical (does "bush doctor" mean you have a medical degree?), animal behavior (grizzly, black bear, lion, and wolf may well view you as food, or at least invader/threat), use of firearms and fishing gear (this ain't sport fishing with a fly rod, it's getting food), and much more. You are unlikely to cut off from civilization completely, so that means having money available, maybe earning it - you probably will need to replace clothing at the least, and may need construction supplies for your shelter, plus ammunition if you hunt (got a valid license?).
Living off the land sounds idyllic and all that. But it ain't that easy. I know. Been there, done that for short periods in a very different environment (a more benign one, at that).
Think hard about what you are getting yourself into, and do a lot more research into what's needed.