Following up on responses

follow up to any event is one of those things which first of all is vital if the event is going to be a success, but it is also one of those things which can be remakrably difficult to get right in all circumstances. Is it better, to suggest something to young people and wait and see how many actually sign up before you make it happen, or is it better to put something on and see how many come along to it? My own persoanl opinion is to put something on and let young people know about it, rather than just waiting for them to sign up. If something is there, organised and ready, they are more likely to come along. But do you have any experience of this kind of thing, and what works best for you.