Least you got to fish. I never got out, due to work and having a bad cough. Today (Sunday) should have been great. Fish should be enjoying the warmth in the shallowest water near shore, 1-3 feet. On the sunny, downwind shores of the lake or shallow inlets that warm fast. I'd try that first, only try deeper etc if that doesn't work. Disagree about boats. Boats just get you more places quickly. Look for the fish real near the bank near any kind of wood, bush or other cover. You might have been casting over them!
USACE says the lake's only 1 ft over summer pool. That can't be bad.