Do you love big bluegill?
Many lakes will stratify in hot weather. Especially if they are deep lakes. You can usually see the thermocline on your sonar if you turn the Gain/Sensitivity up. The top of the thermocline is the coolest, oxygenated water. There's where a lot of fish will go. Try to find some structure/cover that intersects the thermocline. There should be fish there.
Kevin;; thats just a part of fishing;; also draws us back to fishing.. just think;; if we ( loaded the boat everytime;; caught every fish; nothing ever got away;;; wouldnt it get boring??? if you dont catch any one day;; take the time to enjoy the day itself!!!
Kevin, good luck with that lake. It's an infamous lake for sudden offset activities. The only way to entice them is live baits. Don't go for artificial. Stick with half, not 1/4, but a full half crawler, using dropshot rig (hook with 12 inches from line, with a minimum of 1/2in protrusion of hook line from main line) in the rig. You can call it an outrig of the main line.
As both Slip, Allen, and Carl indicated, there are a lot of factor involved. Playing with hot days can be super tricky, especially on a calm day. They will run for the deepest part of the lake. Light windy day, you'll get plenty of actions during early hours in the morning and later in the afternoon, and just before dusk.
Kings River is a bit low compared to the past March. Still good fishing, but when there's a slow flow, it's considered as dead. Foraging becomes poor, and bites become non-existing. Move to the delta split at the northern fork, or look for very dense areas of plants were forage becomes greater.