Dave Rimmer, of Afon Tenants' Association, said locals had wanted the iron gates for years.
BBC: NEWS | UK | Wales | North East Wales | 'Alleygates' tackle estate crime
Port Talbot's Afon Lido was unavailable and Carmarthen's outdoor Showground unsuitable for a March fight.
"People have clocked up arrears who were not in arrears before, " says Duncan Forbes, chief executive of Bron Afon.
However, Duncan Forbes, chief executive of Bron Afon Community Housing in Torfaen, said the new scheme "makes scarcity worse".
Judge Andrew Keyser QC said the agency did not build otter holts on the Afon Cegin river close to Mr Dobson's fish farm.
Bron Afon Community Housing, the biggest social housing landlord in Torfaen with 8, 000 properties, has 950 tenants receiving direct payment of their housing benefit.
Education Minister Leighton Andrews has approved plans to close sixth forms at Cyfarthfa, Afon Taf, Pen y Dre and Bishop Hedley schools in 2013.
Merthyr council said Afon Taf High School closed to years 7, 8 and 9, but opened to years 10, 11, 12 and 13, after the heating system failed.
The initial Alleygating trial focused on four areas in Caia Park, but the new money will expand the scheme across Caia, including parts of Afon, Springlodge, Whitegate and Rhosnesni.
BBC: NEWS | UK | Wales | North East Wales | 'Alleygates' tackle estate crime
Bron Afon community housing in south Wales said it had seen a 50% increase in arrears, while pilot projects in Edinburgh, Oxford and Southwark are showing around 30% increases in arrears.
New floodgates are being fitted to the Afon Erch near the town's harbour, and 400 metres of sand dunes - damaged in 2000 by a severe storm - are being strengthened.
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