While stripers have thus far proved late, erratic and often disappointing, scup fishing has been consistently rewarding. At hot spots like the Dowses Beach jetty in Centerville, kids catch just as many delicious “porgies” as the adults.Last week, fishing in the storied Cape Cod Canal went confusedly from limp-lined and boring to 40-pounder-thrilling — and back again to limp within an hour. Many fishermen were asking, “What happened?”Big, migrating, post- […]