Jigging for trout is a very effective method to fish deep ledges in a lake.
Jigging basics:
jig or spoon heavy enough to sink to the depth you want to fish
hooks must be razor sharp for this technique
Drop lure to bottom and reel up so lure is just off bottom
swivel on line to keep line from twisting
leader light enough so trout won't be spooked by it
jig firmly up
vary jigging style
slack line jig on free fall
Set hook on the slightest tick or pull of line
use a scent oil on lure
use a line counter reel if fishing suspended fish below a school of bait
If you don't have a line counter reel drop to bottom and count the number of cranks to reach the surface. Divide the cranks by the water depth and fish the appropriate depth to entice the suspended fish
Keep jigging if you get a tick ....the fish missed and should come back