Congratulations on your yacht purchase! I can recommend great option - Sandy Creek Yacht Club on Lake Travis. It is not just place to store, but real community where people like you can enjoy the water. Their marina has everything you need: variety of berths for yachts and personal watercraft. All berths are equipped with water, electricity and Wi-Fi. I personally use their services and am very pleased. Plus, they offer perks for club members, such as discounts on fuel. The spaces are quite spacious, so do not worry about the size of the boat. You will definitely find something that will suit. Plus, the atmosphere is just great!