Part timers in the 38gk in Texas,
we used to get it as cold as possible during the day and use blankets at night if we ever got ahead of the cooling curve !
but leave the AC fans on all the time to keep air moving and balance it out...
Without a genny but with vent covers,
I would leave the roof vents open on the way with the fantastic fans running to try to expel SOME of the furnace.
we would get to a park in the afternoon,
sweat like pigs setting up, turn the air to 60, close all blinds,
leave the slides IN trying to cool the least amount possible,
and go out to shop and eat while the ac's tried to do some good...
then when we came back an hour later, it would be down to about 90 and we would finish up the setup