I have tried a few things from maintaining a cool end of 76/78 to cool down my hot spot to 80 days and night, to not cooling, to now doing what I do which seems to work for my animals.
They have a cool spot that varies from 76 to 78 their hot spot is about 88 during the day and 78/80 at night (I use a herpstat ND so the night drop is done automatically each day)
Works for me and my animals
Again it's all about finding what works for your animals.