Spreading the footings

Spread synthetic fibres or geotextile footings evenly across the sand layer.
Watering the surface

Water the top layer to bring moisture into the footings and sand before mixing.
Mixing the surface

Mix the surface with a power harrow to a depth of 3 inches (7 to 8 cm).
Maintenance

To compact the surface, you can use a power harrow equipped with a roller.
An arena groomer is the perfect machine to use for maintenance.