Minus stout competition from the Mississippi Gulf Coast and with thousands of recovery workers with time and money on their hands, Louisiana's casino industry is enjoying its biggest boom ever - thanks to the double punch of hurricanes Katrina and Rita. But Mississippi, with a reconstruction plan featuring shoreside casinos that are attracting billions of dollars in investments, will be back in the hunt soon and positioning itself to reclaim its gambling dominance in the South, industry analysts say. Flocks of gamblers have provided a revenue boost for Louisiana, which faced dire predictions of deep cuts in spending after the...