The only part that concerns me about the harness stuff, is that the seat bottom isnt secured. If it was latched down somehow, then a harness would be a great idea. But if I had been harnessed in when I rolled mine over on its side, I would have been "hanging" around and very sore the next day. The cart just slid me across the seat and stood me up on the ground and the cage and cart came crashing down around me. It looked like I just laid the cart on its side and stepped over and inside the top and stood there. It was the easiest and fastest crash Ive ever had.
Glen, Im sorry about Hijacking your thread, but I just wanted everybody to know, that all things considered, our cages are pretty safe.