I have designed scaffold systems in SketchUp. Make sure you have a clean scaffold file with a balanced bounding box on the components so you can use corner and center snaps effectively. Make sure the dimensions are correct so you can type in moves, and use inference locking and copy/move arrays to help build. Example: single level set with floor boards, copy/move with blue arrow for vertical lock, type in level height ie 7.5 feet, then type x5 for five more levels. Arrays are your friend.
Snaps take a while to set up initially but can make the work very fast.