We visited Angel Island in late Feb 2011, and had a great time. It was a special holiday, so the ferry was running. The weather was a bit cold in late Feb, but luckily the sun came out, which helped a lot. There were not that many people on the ferry (and the island), but was very peaceful. I figured that it should be a mountain biker's heaven as it's great to bike on the island. The view is great, but there were not much going on here. We might come back with our own bikes next time.