What are the pros and cons of a hands-on or hands-off approach to shoreline protection?

A hands-on approach to shoreline protection, such as building seawalls or planting vegetation, can provide direct and immediate protection from erosion and storm surges. However, it may disrupt natural habitats and processes and can be expensive to install and maintain. In contrast, a hands-off approach, like allowing natural ecosystems to provide protection, can be more sustainable and cost-effective but may take longer to achieve desired results and may not provide as much immediate protection.