In the BWCAW/Q I would recommend looking for a few things that will attract and hold fish 99% of the time:

Weeds - You can see them from a mile away. Look for sandy shorelines with reeds sticking up in front of them in the backs of bays. There will be cabbage out a little from the shoreline. Fish spinnerbaits (chartreuse) over and around the clumps or jig around any deep holes, cuts, or the deep edge.

Beaver lodges - Not beaver dams, the lodges you find on a shoreline of a lake. There is often a deep hole in front of it and I've caught fish in front of every one I've fished. Sometimes you can catch 3-4# largemouth and smallmouth like panfish. Use black/brown/green jigs and plastic worms.

Incoming water - Any flow into a lake. Creeks, rivers, waterfalls, and especially the flow from one lake into another usually at or near a portage. A lot of times there's weeds or a hole or some kind of cover that will hold fish there. Fish these areas at night too for some outstanding fishing. Use just about anything.

To me, finding the fish is most of the problem for most people. They say 90% of the fish are in 10% of the water, and I believe that. These few spots are reliable producers and are easy to find.