More rigorous brushing should be carried out using a towable triangular brush (pulled behind a mini tractor or similar). This action helps keep the infill mobile and evenly distributed, if neglected the surface will become less even, compacted and slower draining.
Infill will migrate to the perimeter of the court enclosure. The infill can be collected, recycled and re-introduced to the main playing area. At the same time the perimeters should be cleaned and cleared of vegetation, leaves, twigs etc