if you want lessons than jankie is your man
https://www.tripadvisor.com/Attraction_Review-g297700-d1568576-Reviews-Bali_Stand_Up_Paddle_School-Sanur_Denpasar_Bali.html
https://www.tripadvisor.com/Attraction_Review-g297700-d1568576-Reviews-Bali_Stand_Up_Paddle_School-Sanur_Denpasar_Bali.html