How can I increase membership/active participation in a voluntary organisation - Neighbourhood Watch?

I'm not sure what they've done so far to recruit, but if you are ping out flyers, I would try to include certain statistics on it. Perhaps crime stats in your neighborhood, or possibly any stats which would show how a neighborhood watch helps cut down crime. Also, at the meetings, make sure there is FOOD!! I used to be a teacher, and it would be like pulling teeth to try and get teachers to show up for certain committees. Once the promise of food was there, the turnout increased bigtime!! You don't have to go all out. See if a local business will donate pizzas. Have some bags of chips, sodas,and waters, and you should be good to go. Always try and see if you can get your food donated. Good luck!!