Back in February 2020 four of us, myself, Lloyd, Bradley and Wim, belly boated up the Waipapa River.  It took about 4.5 hours to get all the way to the first waterfall and only 1.5 hours for the return.  Whilst it sounds like a long haul up, the flow is quite gentle, we were taking our time exploring weed beds, deeper channels and areas of good cover.  I caught 7 on the way up and 5 on the way back with one of them being a nice fat Brown.