I should not say I am totally new because i have been steelheading 4 times with 0 success
I have fished 4 times in just this week and I'm probably still considered new so don't worry about it! Not sure about the particular rapids you have to deal with, but I usually start with a standard float rig with a decently long leader. Fresh roe bags with a bead (colour depends on water clarity). I use the bead for attracting the fish to the roe bag. I then do some drifts and adjust my float until it starts to lean to the side (basically lets me know my split shots are rubbing against the bottom of the river). Then I adjust the float so it's as close to the bottom as possible but allows the float to stay vertical (split shots right under the float also help it to balance in fast flows). Then it's all a matter of covering the most amount of water. Casting from the far shore and bringing it closer and closer and repeating the process until you have covered every drift possible in your spot. If no takers, than move on. Eventually you might get a fish and remember the drift you used to get it, that might indicate underwater cover or an area where more trout might be holding. Drift that spot until your arm gets tired, if there aren't any more fish you can move on!
Those would be my tips to help you get into some fish. So far this week, this technique has given me at least 12/25 landed/hooked trout