I thought I'd start this thread so we can share ideas that we have found that make our lives easier. The thought occured to me as I was working on a job today. My first tip: When jetting or boring under driveways, the pipe can sometimes veer off course by hitting a rock or obstacle and not come out in the box that you have prepared. When this happens, it usually means a lot of digging because you don't know if it went left, right or down. If you have a locator such as the 521, you can simply place a length of wire through the pipe and track to where it has gone at the end. Then you simply dig straight down until you find it. I've been doing this for quite some time now, but I thought this might help some of you who have gotten yourself into this situation. Yet another good reason to have a locator on your truck as they will save you huge amounts of time and hassle.