In addition to council activities, Troop 40 does much for Wailuku Hongwanji Mission. To start off the year, the troop handles the fire cracker display for the New Year’s Eve service. Every other year in April, the troop mans a first aid station for Hanamatsuri, a gathering of Central Maui Buddhist temples celebrating the birth of the Buddha. For Mother's Day in May, the troop treats mothers and temple members by preparing and serving an elaborate brunch. During the summer and winter, the troop assists with temple cleanup. During the Obon festivities, the troop cooks and sells teriyaki beef, teriyaki chicken, chili, miso soup, and other food items. The troop provides manpower for building, painting, and dismantling the temple’s chow fun cooking shed for the Maui Fair. Additionally, the troop handles the chow fun production at the fair on Saturday nights. In October, the troop sets up and breaks down tents for the Buddhist Women’s Association Autumn Craft and Food Fair. In December, the troop harvests bamboo and makes kadomatsu, a traditional New Year’s decoration, for temple members and members of the Japanese Cultural Society of Maui. The troop continues to support the temple by helping with recent yard sales and other events.

Recently on average, five scouts per year from the troop earn their Eagle Scout rank. Many of these Eagle Scout candidates select and perform projects that benefit the temple. Examples of completed projects include installing energy-saving light fixtures, building a display case, repainting classrooms, installing new flooring, installing irrigation systems, constructing landscape planters, fabricating and installing handrails, installing projector screens, installing fencing, repairing and repainting ceilings, and installing recycling bins. Many candidates seek donations of labor, materials, equipment, and funds for these projects, resulting in completion of most of these projects at no cost to the temple.

Troop 40 is an outstanding scouting unit. Wailuku Hongwanji Mission is proud of the troop's affiliation with the temple. Dwight Nakao is the current Scoutmaster of Troop 40. Many other parents and adults assist with leadership and support roles.