i would like to add these thoughts as well

i prefer smaller stuff, 1/16 oz jigs are the norm with 1/8 being the largest i carry.

look for points/differences in water chop(probably a subsurface reef.

if you dont know a lake, troll a 15 or 20 ft taildancer(my personal choice) until you hit bottom. then whip out jigs

i jig using unscented soft plastics. easier to store. easier to change. easier to handle. works the same. the smell isnt that useful for casting and jigging. works for trolling/vert jigging marginally better. dont go too big. i use 3 in twisters, but mostly 4" ringworms.

the kiss method also applies. (k)eep (i)t (s)imple (s)trategy (generally the last word is different). basic colors, white, orange/brown, and chartruese. have some variety but not too much where it makes you change to the point where you dont have your lure in the water.

bottom! stay close! in canoe country your main snags are rocks. you are in a very mobile canoe, float over it and you can get it free 98% of the time.

Well, here's my 2 cents.  First, when it comes to fishing I've got nothing on many of the folks on this forum - I'm definitely a newbie.  This last season was only my second time fishing on a trip.  Mind you I had a pretty good teacher who helped me get up to speed in a hurry plus I read a lot.  I'm definitely into Wally's and while I haven't as yet caught any of what you'd call trophy sized fish, in both Quetico, 2 years ago, and Wabakimi last year I caught lots, mostly between 2 and 4 pounds.
Like you, Drewface, most of my fishing is done in August so I know that if I want Walleye I'm either going to have to go deep or fish at outflows.  Also, although I have caught Walleye during high sun times of the day, they really don't like bright light so fish at dawn or dusk (if you're up to night fishing, even better) or on an overcast day and you'll have the best luck.
Me, I'm lazy so I keep it pretty simple.  I find jig fishing boring - I'd rather cast and catch nothing then sit with a jig so I'm definitely not the guy to talk about the virtues of jig fishing.  I pretty much stick to stick baits.  My favorites are Taildancers, L.C. Pointers and L.C. Stayzees. My 3 favorite colours when fishing stained water are yellow, yellow and yellow (actually charteuse is also a favorite.) 
In late summer I know I've got to get down there so I'm using deep divers, typically something that will get me down to between 12 and 20 feet although I have to say, it's been my experience that if I can get their attention, they'll come up some and nail the bait. 
When trolling I keep it pretty slow.  My wife is my tripping partner and although she likes going out fishing with me, she doesn't like to fish.  So she's my trolling motor.  She's in the bow and paddling pretty easy.  You don't want to be going too fast according to my experience.
I don't travel with a depth finder.  If you can find topo maps that include the lakes, that can be helpful for sure.  But mostly I use my eyes.  What I'm looking for are shore lines and points with small boulders and rocks that drop off pretty quickly.  I'll either troll along the shore (best to pick one that the wind is blowing into) or sometimes shore fish casting out and bumping my lure along the bottom as I reel in (shore fishing is a great way to lose lures!)  I like to practice walking the dog and other such techniques although I'm not really sure that Walleye care one way or the other.  Unlike bass, Walleye aren't particularly aggressive fish so you've got to get the lure in front of them when they're hungry.  But keep in mind that they school, so where you find one, whether trolling or casting, you'll find more.  I've had quite a few experiences where I've hauled one out with every cast for a 1/2 hour and then nothing.
You can also catch plenty of Walleye at outflows.  There I use L.C. Pointers mostly and pretty shallow - 3-6 feet.  In Quetico I had really good luck at most outflows and Chatterton Falls was the absolute bomb.  But this year in Wabakimi, I didn't have that much luck around outflows - not sure why.
Walleye aren't the most exciting fish to catch but boy are they good eatin'.
By the way, if you're in Quetico and looking for Walleye be sure and take a trip to Jesse - outstanding fishing.
Next year I'll be making my first trip to WCPP and I expect amazing fishing, Walleye and trout.  Only 6 months to go!

I have to agree with Phantomjug ... when walleye fishing in August into September, you have to fish at 20 -30 feet to consistently catch fish during the day. It is certainly tougher to fish deeper at 20-30 ft  in August vs 10 -20 ft in late June or July ( when I usually go).

Mid lake reef stucture near deep water and rocky points that taper into deep water are key. Focus on areas that get hit with wind. I concentrate on walleyes when and where there is the "walleye chop". If there are calm waters I move to focus on smallies.

I like to jig and take the aforementioned advice of other QJ fisherman and go as light as you can. However, I often use 3/4 oz. Northland Whistler jigs a lot with a Gulp minnow or leech a lot...especially when fishing in August when fish are deeper. The "extra" sound and vibration of the blades on these jigs seem to help attract walleyes. I also use 3/4 oz Lindy slip sinker setups with floating worm harness with a Gulp worm, minnow or leech to cover a lot of deeper  water and find fish. ( in June and July 1/2 oz slip sinker) I will then go to a jig when I find concentrations of active fish. I have begun to follow the ways of many QJ folks like Mastertangler and use Reef Runners and Deep Taildancers to troll deep structure. They are very effective.

Early morning and towards nightfall you should hit 5 to 10 feet depths reefs near windswept shorelines and narrows between islands or weed edges. Walleyes will come to these spots during low light times. But during the day...head DEEP ... thats where they are in August.

Heed the advice of the many good fisherman that frequent QJ and you can find walleyes during the "dog days" of August.

Hey Drewfus, if you PM me your email I would be willing to disclose the location of some hidden mid lake structure.  I don't know where you trip but if you're in the northern half of the park I have some places that 99% of people paddle over.

1.  Depthfinder.  With it, you're fishin.  Without, you're just wishin.

2.  Troll until you hook up with walleye

3.  Slow down and jig or cast cranks until the bite stops.

4.  Lather, rinse, repeat.

Pretty much everything else you need to know...lures, depths...has already been covered. 

The only other thing I will say is when you hook up while trolling, pay attention to the conditions around you and then try to duplicate as many of them as possible as you search for your next spot.  You'll quickly find out which of the variables matter on this particular day and which don't.

A partial list of what to watch for (in approximate order of importance):
Depth
Bottom content
Location (reef, point, saddle, flat, open water, weeds, etc)
Wind direction
Sun direction/penetration
Lure speed
Lure action
Lure color

After awhile you can go from lucky, chance encounters to targeted fishing with a high probablility of success if the fish are active...and you'll be on the most active fish in the lake more than likely.