Need advice for pre spawn tactics

Guys,

Blanked the othe day on the small (550 acre) lake next to my home here in
central Illinois.

I pounded the banks w/ spinnerbaits, cranks and jointed minnows. A few short
strikes but nada...
Tried deep w/ senko rigged wacky, texas...nada

Typical conditions:

Water temp: 58-62
Pre-emergent weeds (sparse growth at this time)
Water stained, muddy visibility poor 8" to 12"
Saw lots of fish deep 8' to 12' suspended
Weather is yo yoing between spring fronts
Lake depth goes to 22', long, somewhat narrow, stream fed, fine silt bottom
mostly.

What should I try and key on for presentations for this time of year?

Suthern