As more and more Aboriginal people around Uluṟu became involved in tourism, Forrester began working as a tour guide at Kings Canyon. He later became a ranger for Uluṟu-Kata Tjuṯa National Park, and a mentor at Alice Springs Desert Park, training young Aboriginal people as guides and park rangers. He believed tourism and conservation had excellent opportunities for Aboriginal people. He was firmly against any economic development that comes from uranium mining. A lot of central Australian communities depend on grants to mining companies for income, but Forrester argues that this reliance must be broken.