I don't think so, its got heavy competition from Kingler. The only things Croconaw has that Kingler doesn't is priority, Ice Punch, Dragon Dance, and the ability to carry Eviolite. It also has to deal with its subpar 80 base attack vs. Kingler's 130, and lacks Knock-Off.
+1 252+ Atk Life Orb Sheer Force Croconaw Waterfall vs. 0 HP / 0 Def Articuno: 263-309 (81.9 - 96.2%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Life Orb Kingler Crabhammer vs. 0 HP / 0 Def Articuno: 234-277 (72.8 - 86.2%) -- guaranteed 2HKO after Leftovers recovery
Even with Life Orb, Croconaw with +1 is only slightly stronger than Life Orb Kingler and on par with Choice Band Kingler. The only reason I can see to run Croconaw is for eviolite bulk and Ice Punch, otherwise Kingler can do what Croconaw can without needing setup.
Edit: Also, what happened to the FU ladder? FU's not even available by challenging on the Aqua Server anymore. Was it moved somewhere?