Disagree with Watersoul big time. I ran it last week in a paddle rig at 4600 and Narrow Falls is a difficult set up with big consequences. The entire river piles into a massive hole on the left, which sets you up for the wall. It's trickier now than it was at 3k because the guard rock at the top is underwater. Set up pointing hard river right, basically aiming for that guard rock at the top. If you go just left of it charging hard you can ride over the laterals into the smooth water under the house rock at the bottom. Even eddy lines can flip boats right now up there. Do not go left on the first rapid after the put in, steer right and avoid the wave train as the hole at the bottom is huge. We also had a boat dumptruck in Tootsie Roll, the hole that you're funneled into looks harmless from above but is VERY sticky and you better be t'd up to the fraction of a degree if you hit it. We were two experienced Poudre guides with a college outdoor group as paddlers. Not weekend warriors with the wife and kids.
Do not take this run for granted; dress to swim, scout Narrow, no kids and no dogs. Thanks for giving me an excuse to relate the account of our trip bro! Have fun and post a trip report.
PS: Watch for the badger digging it's den on the left side of the road just before the parking lot at the put in.