I'm going to assemble an inspection camera system (Primarily to inspect chimneys) which is basically a small camera on the end of a long flexible shaft that feeds a TV or VCR on the viewing end. I have the camera and cable and I plan to fish it down a 100 foot 3/4 inch flexible PVC conduit. Should I try to incorporate another function into this beast like a magnetic pick up or??? I will be water proof but not exactly residential sewer sized. I was thinking a small 1/4 inch tube I could blast compressed air through would be useful. Be nice if I could flex the end left, right, up, and down but I have no idea how to do this. Anyone ever use something similar?