SAN FRANCISCO -- Shares of Crocs ( CROX) plunged to eight-month lows on Monday as the plastic-shoe maker fights an image of a company struggling with possible "post-fad" status. The stock was recently off $3.69, or 11.2% to $29.08. In late October, the shares were trading in the lofty mid-$70s. A story in Monday's Rocky Mountain News noted how the 2006 highflier has fallen on tougher times: a tough earnings report in late October, a negative patent ruling from the European Union, and a shareholder lawsuit spurred by executives' selling of stock. Wall Street houses, however, have yet to turn down their thumbs. Last week, Piper Jaffray indicated that its checks suggested that sales remain solid, while DA Davidson initiated coverage on Nov. 30 with a buy and a $63 target.