ZedneWeb / Library / High Tide
Dr. Charles and I had found the tribe on a relatively small tropical island. It was fairly close to a larger, modern island, so we just used a motorboat to move between the islands when we had to. At first, we moved back and forth rather frequently, but as we came to know the natives we gradually stayed for longer and longer periods of time. By the time we were able to converse with the natives, we were staying on the island for periods up to a month.
We didn't want to contaminate their culture -- after all, if we did we wouldn't have anything to study -- so we kept most of our high-tech equipment on the boat. Unfortunately, there was only one harbor on the island; the rest was surrounded by a reef that was safe to cross over at high tide, but would rip the bottom off the boat at low tide. The unfortunate part was that the tribe lived almost as far from this harbor as they could -- pure coincidence, of course, it just happened that way. As a result, any time we wanted the equipment in the boat we faced a tough, two-hour hike. There was a good spot for the boat near the village, but we could only get to it by crossing the reef, which we were nervous about.