I don't think welding a platform on top of a stepp ladder would work. At least not without some modifications. Kenn's setup is pretty much what I was considering building with the LW hand climber seat. I don't see why it wouldn't work as long as all the engineering and angles were right. However, I'm not an engineer, professional angle reproducer, or welder so I might just have to wait until someone with actual talent can put this together.