Governments in these areas should be vigilant with conservation laws. Companies organizing ecotourism tours cannot be allowed to exploit an area or its local people.
Money generated through tourism makes possible more research into identifying and correcting possible imbalances in the ecosystem.
While initial foreign investment might be necessary to start an ecotourism project, the country where the project is located should sustain the project. This will ensure that the money derived from tourism doesn't leave the country.
Tourists as well as the local inhabitants of an ecotourism area should be well educated about the resource in their midst, and in how to protect and sustain it. This will enable everyone to enjoy the resource and help the local people in the form of jobs and other benefits.
These tourists would help out in a specific ecotourism area by working on building or cleaning projects. They would not be paid.