From mid-March through about mid-April last year I was finding schoolies tightly packed in abt 12-16 feet of water. 1/0 olive/yellow or chartreuse over white half/halfs with some peacock on top worked well. Once it warmed up a bit they were on the move and it was hard to locate them. I got a lot of skunkings trying to follow them up the river once the herring were thick. As Adrian said, it's like breaking new ground. Maybe more rattles, more bright colors, something to push even more water, big bead eyes, try them all. By early May I was fishing some CT rivers and then "out front" and simple herring patterns 8 inches and bigger got a few nice fish for me. All on sinking lines from the yak.