Mustad in years past I was a licensed charter capt on Lake Champlain and always fished for lakers at or near the bottom after the spring time. In spring they were on top and we caught them running off planer boards in shallow water. In summer I always did best bouncing bottom on any reef in the 50-100 foot range surrounded by deeper water. I had 4 Big John electrics on my boat and found them to be top of the line riggers. I kind of got bored with trolling and sold my rigger boat and switched gears to a bass boat. I fished Lake Ontario lots of times and we caught the Lakers there suspended in 75-130 feet over deeper water. I guess every lake is different. Magog is a cool lake. Good luck!