As to my experience, any kind of contest will attract your down line. Like "buy one and get one FREE" type methods. I offer 5 free Affiliates for each Bronze leader and after two day got two Silver. The more contest you start the more PSA will get interested. Also try to look at the movements of your down line. I watch them everyday. And found many small mistakes. Daily circular letters are very important as well.
By doing so I won Two STL and about 20 EA in a single month.