Youngsters at the BMX track at Porth in Rhondda Cynon Taf said it has given them "something to do" - and is "great fun."
The initiative has been picked out as one of the best in Europe for crime prevention.
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Three men have appeared in court charged with the murder of Russell Peachey who died after being found unconscious on a Cardiff street.
Outbreaks of rain and showers will continue to affect most parts today. A much drier, warmer and sunnier day expected for all tomorrow.
A heart attack survivor has been named on a list of quirkiest fundraisers when he raised thousands after creating a flower tower.