You need a spooker on this box the day she lays the first egg and you can make it yourself. http://www.sialis.org/sparrowspooker.htm
An inbox trap is almost necessary to catch a bait bird for your repeating trap. You should put it in another box nearby.
http://www.vanerttraps.com/products.htm
As far as using your DRST, we have a thread going that is devoted to that. Have you looked at it? It’s stickied at or near the top of the main forum page.
Gin
Atlanta, GA