tonya - don't do anything to your existing business model, because it's working. All you want to do is add more options (like the leak free tour) to entice a different group of webmasters to promote the program.
There are many sites that have multiple tours (and not just amateur sites)
Let's say that you have 1000 hits a day coming into the current tour. By making a different tour, you might be able to pick up another 1000 hits to the new tour while keeping the existing 1000 at the old tour.
Just give the affiliates the option of choosing which tour they want to send traffic to
