ocr: RENSACOLA. DLACH FLORIDA "We lost two homes in two months, - says Susanne Silber, who sifts the debris of the family beach house, destroyed by Hurricane Opal; the Silbers' other home, in Pensacola, fell to Erin. They will rebuild, but where? "We've only got one life to live," she replies- the beach.t - RG - - Damming the river of sand, a stone groin Seawalls, which run parallel to the shore, essentially "robs Peter to pay Paul," says protect beachtront homes from battering coastal geologist Stephen Leatherman. lt waves and storm-surge llooding- - but they traps waterborne sand on the updrift s ...