I just created a quick video about an advanced technique you can use to develop a stronger inverted bodyweight press. From beginner to advanced, it shows the path. This is the type of information that I present in my bodyweight training DVD that will be out soon. I will get that info to you soon. I use chains to add resistance, you could use a weighted vest if you like, but we don't all have a good fitting vest that will stay put during this exercise.  Enjoy the video, hope you can benefit from it. Remember, add weight slowly and watch your strength grow.