It is possible that your particular lake is "turning over". If that's the case the fish are only battling to stay alive.

One way to check depth is with a slip bobber. Keep adding depth till it doesn't float properly. Then make adjustments. Till just on or just off the bottom.

Deathbeforedisco
If I was a gambler I would have bet you didn't own a bobber

Ketchen
Next time you're in the mood for a Quill... Determine the depth.... Lighten the jig where it won't balance... Fish it horizontal... even the weariest of fish can't stand it.



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