How can I effectively use rocks for a French drain installation?

To effectively use rocks for a French drain installation, first dig a trench along the desired drainage path. Place a layer of landscape fabric at the bottom of the trench to prevent clogging. Then, add a layer of coarse gravel or rocks to create a base for drainage. Ensure the rocks are evenly distributed and cover them with another layer of landscape fabric. Finally, add a top layer of smaller rocks or pebbles to prevent soil from entering the drain. This will help facilitate proper water drainage in your French drain system.