We were in the BVI for three weeks in November. There are lots of mooring balls in Great Harbour, even with lots of folks visiting the Willy T. If Willy is gone by the time of your visit it's hard to imagine a shortage of mooring balls. Depending on conditions, Key Bay can be a very nice anchorage. It's on the western side of Peter Island near Key Point. There are a few coral heads, but clearly visible in good light. Key Bay is also very convenient for the trip back over to Road Town. It's actually closer to Road Town than the Bight on Norman is to Road Town. Only a few boats can anchor there comfortably, but when we've been there we're either alone or had just one other boat in the bay.