Hurricane is awesome, but it's highly situational. Ideally you use it to push critters into a corner and lock them down. With a base -tohit of 30% (~46% fully slotted) it pretty much neuters anything it touches. The -60% range also forces critters to only use their ranged attacks unless you're literally right on top of them. Also great for boss+ fights. You can't always corral them if they have KB and/or repel protection, but you can absolutely debuff them. Another good use is to protect the back line from any critters that get peeled off the tank and coming bearing down on the squishies.
The one thing you DO NOT want to do is turn it on and leave it on. I was recently on a PUG where the lead did this, and between him and a PB they were knocking critters all over the place, making my Scrapper's life pretty miserable.