For the simulation process of the C ERP in Fig. 6, a simple approach was carried out to calculate the C ERP value for each year, without considering the bonus-sharing among the fishers, maintenance costs, and saving for future additional costs, as mentioned above. The initial cost to construct and install the gear was provided from the project budget in the case of the Rayong set-net. The depreciation process was also not considered in this project, while the maintenance costs and saving for new unit introduction are important for future sustainability. Even using this simple approach for considering the cost-profit balance, the optimum operational cost can be set through the decision-making for daily operation costs on the fisher's salary, fuel/ice and boat charge, according to the number of fishers and operation days.
The catch and sale trends of newly introduced set-net gear are difficult to predict even with the results of a prior survey, as was carried out in Rayong by SEAFDEC [13,15]. The fishers' group in Rayong was forced to set the cost payment factors to adjust with the sales and profit trends year by year through their decision-making process under the committee system. This is also another learning process in the Rayong case and will be applicable to other cases of set-net technology transfer.
The pilot project on technology transfer of the community-based set-net in Rayong, Thailand, is a possible solution for empowering small-scale fishers to work together as a group, with the potential of successfully increasing their income. Another positive impact of set-net is the environmentally friendly aspects [19] of the technology. This technology transfer program should be studied by long-term monitoring, and future extension phases should be promoted in other regions of Thailand and Southeast Asian countries.