Something fun to do in Maui is paddleboarding or paddle surfing. You can rent large boards and paddles at most Boss Frog’s Dive & Surf Shops around the island. Call (808) 661-3333 for the nearest location.
It’s much easier to learn paddle boarding than surfing, in our opinion. Surfing with the paddleboard is a different scenario though.
If there are tiny waves, you can ride them. If there are no waves, you can cruise around and check out the reef. It helps to have polarized glasses to see deep below.