Smaller boats and those with low freeboard should be hauled and stored ashore or put on trailers and transported inland. Boats stored in dry storage racks have shown to be susceptible to damage and should be placed on trailers and moved inland also. If you have no other choice but to leave your boat in the water, it should be secured in a snug harbor. A harbor that is not overcrowded and with as much protection from storm surge and wave action is highly desirable. In addition if you plan on anchoring, check to see how much water you will be anchoring in and the type of bottom.
Anchors usually hold best in sand.
Another choice would be to take shelter in rivers, canals or other waterways. Again try to pick an area which is not overcrowded and offers shelter from the forces of the storm. Your mooring could and should be made up of an assortment of anchors and lines tied to trees, pilings or other structures. The more correctly applied anchors and lines the better. If your boat is left at a dock you will need to develop a plan to secure your boat using more, longer and larger lines than normal.