What about going to the schools during "Back to School night" and having a display w/scouts to talk to the possible applicants or make a personal visit to the Webelo's 2 dens in your city, take a couple of boys to talk to the Webelos and invite them to a Troop Meeting. Then at that Troop meeting maybe set up a mock campsite complete and have different stations 1. How to set up a tent 2. How to pack a backpack 3.Lashing station and then as they complete have some Dutch Ovens going for some desert for all who attend.
This is what our troop is going to try to attempt this upcoming year for rec