I finally stopped booming down with the load still swinging, and a $40 bubble level on my jib is what did it
Was setting trusses on a build in Amarillo last week and watched my headache ball drift 6 inches past the tag line every time, so I stuck a bubble level on the jib tip and saw I was reading the swing wrong the whole time. Anyone else run a level up top or do you just trust your gut on the drift?