Lilygirl - if I've caught 500 walleyes on Sugar Camp Lake, only a small fraction of them have been on the deep side (maybe a dozen), and those have been in the evening at sand bar on Rapalas. The walleye definitely are bigger on the deep side, but much less quantity.
Fishing the deep side is always a little tougher for me, but what I think is really making it hard now is that - my guess - many fish are stranded on the shallow side. During spring and early summer, there was still a little water at the sand bar - enough for fish to go through. The shallow, darker-bottomed side warmed up faster and the fish hung out over there. Then the water dropped and they got stuck there.
I noticed a weed bed I've never seen before to the east of the rock bar in about 10 feet of water if I remember right from 2 weeks ago. Picture the rock bar, then 75 yards east to where it shallows up at a sand flat, then another 50-75 yards more east. I worked it a little bit, unsuccessfully mid-day, but had to go.
Basically, now that I am only able to fish the deep side, I'm bass fishing while hoping for an accidental muskie. It's been slow. Even at the sand bar at night it's been slower. I've caught a few walleye there this summer (released) but it's taken me all summer to do it.
I've heard the quarry rumor too, but I can't find it on a map. I'll email some old fisheries biologist friends at the DNR and ask some questions. I am slowly becoming a proponent of creating a channel at the sand bar if biolgists would support it on a ecological basis. That is, if some of the trapped fish start showing up dead, or spawning isn't looking too good. But that takes a baseline shocking survey, spring fyke nets, and young-of-the-year surveys over the course of a few years.
On the other hand, old timers say this is about a 30-year cycle. The only problem with that is: how many 30-year cycles have they witnessed? Two? New influences emerge over time that can throw cycles off. What I'd like to see immediately is folks removing their pumps that they use to water lawns, because every little bit can help. There is a meeting coming up next Saturday (the 12th) for people interested in Indian Lake and Sugar Camp Lake at the firehouse.