When creating drawings of weldments made from square or rectangular tubing I have great difficulty selecting the edge of the tube in order to attach dimensions, no matter what selection filters I use I often have to zoom way in to the edge and even then have to click 4-5 times before SW finds the edge. Then zoom out then to the other end of the tube, and hope I get the second edge. What should take 5 minutes often takes 10-15 minutes with multiple mouse clicks. Even something as simple as the image below, this can take 10-15 clicks and multiple attempts. I had this problem several years ago when weldments first appeared, then it was somewhat better for a while, lately it's worse than ever.
I've found setting the drawing view to 'Wireframe' is somewhat easier, but still have far too many missed mouse clicks.