Outdoor sex in Hawaii

On one trip, we hiked the remote Kahana Valley on Oahu. In those days, you could reserve either all morning or all afternoon for your exclusive use, so we reserved on hot morning and as soon as we were out of sight of the caretakers area, we stripped and hiked nude up into the mountains; on the way back down, we stopped at a small pond of cool water, where we got in and fucked to our hearts' content before resuming the hike back to our car.

On another trip, to Kauai, we hiked the Kalalau Trail and camped at Kalalau, where we could go nude, and fucked at our campsite.