No surprise at all. I just got back from a 10 day trip to Ontario. I caught 57 walleyes, of which, 51 of them were caught in 3-6 feet of water in the weeds. They were up in the weedy, shallow flats chasing fry. We caught the majority of our walleye on rattletraps, chatterbaits, and baby minus 1's. The other 6 fish were caught in 6-11 feet on wiggle warts, shad raps, and DT10's, just off the rocky breaks of a weedy flat.
Lunker of the trip (6lb. 7oz.) caught on a Rattlin Rap in weeds. You'll notice the weeds still on his back.