Cindy, hi
I think you are referring to the 'out bonuses'. My recommendation: leave it empty, all of them. If your traffic does not grow, it's not because you do not employ some fancy bonus system. TP algo operates best if you leave it to make it's own decisions.
1. daily prod. should be ideally above 100%, this is how your site grows. However there are many other factors taken into consideration: amount of traffic for instance. TP rewards not only productive trades but trades that send traffic (uniques). TP has an algo. that is made up of many parts and takes all of these into consideration when returning traffic. That is to say, ideally overall prod. should be above (way above) 100%.
The only thing I changed was the skim setting. I set it to: 1st click 100% skim, 2nd click 0% skim, then again 100% then again 0% etc. It works very well like this at least for my sites.
So I recommend you work on SEO, and one way quality hard link building. I recommend LinkSpun.com if you don't use it already.
Also keep in mind, your site has to load blazing fast. whichloadsfaster.com is a place where you can get loads of info about your site.
I would also recommend to trade with sites that have exactly same size of thumbs and content and very similar graphics.
Hope I helped.