I like to fish in the 30 - 50 foot range in any area with good structure. Areas to look for are sunken islands, sharp drop offs, creek or river channels, sharp dropping bluffs, and points that jut out into deep water, particularly if a creek channel is nearby.
The very best area is what is called an "inside turn". This is where a deep area juts up into a shallower area, former a horse shoe area of deeper water surrounded on both sides by shallower areas. A good flasher is a must, without it you are not catching the amount of lakers you could, no doubt.
I like to use tube jigs fished on 1/8 - 3/8 ounce jigheads. I use 2 1/2 to 3 1/2 inch tubes in white, chartreuse, rainbow, or brown color. I rig the jig head with a small stinger treble, and tip the hook with a postage stamp sized piece of baitfish.
Most lakers are fairly close to the bottom, so start out bouncing the bottom and work your way up. If you see any fish come through at higher levels, raise your jig to their level.
Use a tipup as your second line. Fish the a live or dead baitfish within a foot of the bottom and change depths if you don't get any flags. Good luck.
Tyler