CCTV and security lights wont stop the pikeys. There is only 2 things that really work, the best one, you said you don't want, and the other is alarms on gates.......
My grandad used to have an old pull pin style rape alarm fixed to a gate post and some fishing line fixed to the gate.... open the gate = pulled pin. them alarms are loud at night wold give the horrible c**nts a heart attack......