It's not wide open yet, but San Diego's offshore fishing is definitely showing some improvement, in the weather conditions and in the size and number of species present. Larger yellowtail are showing up under some of the kelp paddies, and a smattering of dorado and yellowfin in the catch may indicate what's to come. The day is coming soon when the albacore go on a serious chew, say the skippers, and the mixed bag may mean that fishing for all tuna species could stay good, maybe even well into the fall.