I get a few drunks and druggies passing my gate to the estate down the road and put plastic cameras up high where they were visible but out of reach. £1 each at a boot sale.
Don't let the police (overburdened) forget this and get the community bobbies to agree a schedule of action with you all. Get their advice and let them know you appreciate it and would like regular meetings. They know who the regular troublemakers are in the area.
Also, if it is a council area, could it be gated at night? Again, publicity is key, plus a charm offensive to coucil officials that won't let them forget the problem.