Ok, I'm not an avid "filmmaker" and I don't know much about what I'm doing in this case. A friend of mine has asked that I try to help him film some sports videos. This requires a sort of cable cam effect and, considering the $0 budget, I thought I'd put one together myself. I have seen youtube videos of people doing this and hanging the camera onto the apparatus upside down only by it's screw mount. Is this safe? How strong is that mount? Can I trust it to bear the weight of the camera?