A rock seawall is one of several options. Concerns about the effects of bulkheads and seawalls on shoreline ecology has increased. In some cases, it may be preferable or even necessary to look at other approaches. My bluff slid this winter. A consultant recommended that when the weather improves this spring, we remove the plastic sheeting currently covering the bare soils and hydroseed.
Hydroseeding grasses can provide some protection from surface erosion on gradual slopes.
However, on steep slopes prone to severe erosion and gullying, hydroseeding may not be effective. Hydroseeding alone is also not adequate for landslide stabilization. The shallow, fine root systems of grasses do not strengthen the soil profile significantly and limit landsliding. For more information, consult, Controlling Erosion Using Vegetation. My home is located about 75 feet from the edge of the bluff.