I was there literally a month ago - one of the best places in Texas for fishing. Here is an excellent resource where everything is described about fishing at possum kingdom lake. There are plenty of fish: striped bass, white bass, crappie, large catfish. We fished near Devil's Island - there are depths and shelters for fish, a great place. You can do it without boat, but not as effectively. The fish were biting great on live bait, especially in the evening. At night we caught catfish - chicken liver worked great. The area is large, there are tent sites, we were camping near the water. It is safe, there are a lot of people, but not crowded. The nature is beautiful, the water is clean - a great option for a weekend.