There are four Gold Bolts on Planet Aridia, the first one is by a sandshark maker. You will see a bomb away wall, behind it is the Bolt. The second is on the center island, you have to be by Skid's agent to get it, and you need the Heli-pack to long jump across the mud to get it, it's in a dump truck. For the third Bolt you need the Magneboots, and once again you need to be by Skid's agent, walk up the pillars to the side of his ship to get the Bolt. Finally the last Bolt you need the Swingshot for. Follow the Swingshot path to the Trespasser's Platform. Look down and there will be some moving platforms, glide down to them and the Bolt is at the other end of the platform.