I'd imagine high water techniques would be in play so fish close to the bank and look for seams but what I wanted to say is be very cautious in this area if you plan on wading in the water because the water is high, cold, and fast. This past pink season when the water was low i saw a handful of people fall into the water and some didn't come back up. Also i would suggest flaming geyser park right as you go in the first parking lot on the left. Thats where I would try. One more thing you do need the discovery pass for flaming geyser park or you could get a day pass from them and good luck.