Later in 1981, Walter and Topsy went to Uluṟu and set up a tent at the base of Uluṟu. From there they sold their "" works to tourists for over two weeks. They did this trip with other artists from Amaṯa, including Tony Tjamiwa and Pulya Taylor, and their friends Peter Yates and Patricia D'Arango. In 1983, this group travelled around to artist communities in the Aṉangu Pitjantjatjara Yankunytjatjara Lands. This was to discuss the idea of setting up a new craft centre at Uluṟu that would sell artworks from around the region to tourists. The couple moved to Muṯitjulu so that they could help set up Maṟuku Arts, in 1984. Water and Topsy were some of the first artists for the centre. Walter served on the organisation's Governing Committee for 20 years, including as chairman many times.