Direct sunshine after a prolonged lunch awaiting said sun to go a little further down. The skins were simply covered in sun-protect oil to, well, protect, and then the girls dipped themselves into the sea between shots. No fills, no frills; just either a 135mm or 200mm Nikkor, tripod and either F or F2 Photomic. Exposure metering: Invercone, Weston Master something or, perhaps, the Minolta Flashmeter thing - can't really remember too clearly. It was a good lunch. Amazing how you could still focus with your head spinning a little bit. Must have been those split-image screens. Could use one now!
We used to carry a gardening water-spray bottle too, which my wife used to spray them with when they dried up... Mostly, though, we used to shoot either early morning or late afternoon, but like I said, lunch encouraged us that day.