A Near a rugged peninsula off San Diego, a 40-foot cabin cruiser carrying undocumented migrants capsized and splintered on Sunday, leaving at least three dead. The accident was unquestionably tragic. The question is why such tragedies are so rare — and whether they will continue to be so. For the better part of a decade, I have been expecting maritime travel to be the next big thing in smuggling humans into the US Southwest. After all, there were nearly three dozen migrants aboard that capsized boat. Even at a discounted smuggling rate of, say, $7,000 per head, a successful trip would be a very lucrative outing.