Rentap was mentored by Dana Bayang and accompanied him on major  (headhunting) expeditions from south of Sarawak to the Kapuas River in what is now West Kalimantan, Indonesia.
Rentap was under the guidance of Dana Bayang and accompanied him on headhunting expeditions that extended from south of Sarawak to the Kapuas River in modern-day West Kalimantan, Indonesia.