As it gets hotter the bass will get more stationary. They will be most active very early and late, when it's cooler.
Just like you and I don't care for moving around a lot in the summer heat, the bass find a cool spot to hang out. They don't chase a lot of bait at that time. They like to have it come to them. So they find a cool spot to ambush bait out of.
Drop offs are a good place. Try to find flat shallow water that deepens quickly. Think of it like a swimming pool that goes from 3 feet to 8 feet very quickly.
Mr. Bigmouth will hang out there and let the smaller bait fish looking for cover to come to him.
Jigs and plastic worms are a good way to cover this type terrain, as they bump along ,staying in contact with the bottom.
Jimmy Pickle has been jigging drop offs the last two days and has caught not only good numbers of bass but an unbelievable average of about 4-5 pounds.
Also, another theory we have is mussel shell beds. Jimmy thinks there are big shell beds in certain places. He had been feeling something on the bottom and believes now that it is shell beds. He catches fish over these spots that are not where most people would try to fish. It is seemingly open water. So our theory is for some reason bass like those shell beds. I have always heard of speckled trout fishermen in the marshes looking for oyster beds to fish over. Same theory, I guess.
So, lay down the rod awhile and cruise around with your depth finder and electronics. Get to know the bottom of the lake as well as the surface.
It should help you catch more fish.