I do not see a floating canopy option for your J2 two-circuit track. How do I make a clean connection along my track?

You will want to use the octagon box cover (J2-UCP) and I-Power Connector (J2-IPWR).  This accessory provides a clean appearance that can go over any of our J2 track connections. Just remove the plastic cover from the connector and the J2-UCP becomes the new cover.