Yeah you gotta have a genny and A/C for boondocking around here, at least for 9-10 months of the year.
We take our trailer down to the coast for about a week every summer at Padre Island National Seashore, you can park and camp directly on the beach and if you go 5 miles down you'll have at least 1/4 mile of beach all to yourself. Anyway, the A/C runs 24/7 on those trips, no way around it.