Unfortunately, as an AI language model, I do not have access to the internet and cannot provide you with a summary about Hogback Island Access in the state of California. However, I suggest conducting research on Hogback Island through reliable sources such as government websites, travel guides, and reputable blogs to gather accurate information about the area. Additionally, factors such as the best time of year to visit may vary depending on several factors and should be researched thoroughly to ensure an enjoyable experience.