Where the boat excels is on tight twisty creeks where you want to be able to bounce off of and spin around obstacles (ie: Barton Creek in Austin Texas). I had some people were real impressed with the way I took Twin Falls backwards - but I had to admit to them that I tried to eddy out and got sucked down the falls backwards. I credit the Y with my making it down successfully - it handles great forward or backwards. I bought it as my first whitewater boat. I didn't want to do cartwheels or enders - I just wanted to survive the trips.
The boat has a pure planing hull - no displacement at all. The closest I can describe handling is going to be like that of a small rubber raft. Mine is nicknamed the Sit-and-Spin because it took me a long time to get to where I didn't spin it around backwards accidentally (okay - I still do it sometimes). :) It's like any other whitewater boat. The trick to paddle it without spinning across the flats (which I hate in the first place) is to learn to make it spin. I wasted a lot of time trying to learn how to make it NOT spin and I wasn't having any success. I started playing around making it spin and I quickly got to where I could turn it around without touching the water with my paddle (yes - impress your friends!). Anyway - once I learned to make it spin - then it stopped doing it when I didn't want it to (mostly).
I've had the thing 2 years now, and it's gotten a lot of (ab)use. I compared it to a Phat, an RPM Max and a Stikine when I bought it - I'm still glad I got the Y. :)