There are lots of hazards, but that part of the lake is where my family's, now my uncle's, cottage is. (It's hidden behind the big cottage on the right side of that drum photo) So that area I know very well, but the gps does helpl.
In the spring when walleye fight the poorest I find it's easy to tell when I have a drum on when they take that first run. Later in the year when a nice size eye can at least fight a little it's sometimes tougher, but ya you are always thinking maybe this is a 10lb eye instead of a 4lb drum.
Most of our bigger walleye are on crankbaits. I mostly use the deep taildancer or a big shad rap. I have the most confidence in perch colour although this year I used firetiger in the middle of the day in clear water and still got fish or two. Even casting in less then 10ft of water I like the deep diving baits because they seem to deflect off of rocks well and don't get hung up too much. Guys soaking bait hate it when you pull up on a spot and hit a solid fish in the first couple of casts. I still like jigs and crawler harnesses but I use scented plastics and don't think it impacts my numbers, it also helps when the perch are a problem. On a side note, we didn't have one perch tap the whole time.