martie, I have not fished silvers in salt for a few years, and I'm not familiar with the grandslam bucktail . But we used to fish Sekiu with flies for silvers. Buy some Q-tips with hollow shafts cut them in half chuck them in the fly vise. Tie on bucktail in white, blue, and green. Wrap and whip finish 1/4 long head, and glue on eyes. Slide 4-8 pearl beads on your leader then fly. Fish with18-36" leader and flasher. We fished downriggers 14-40' on the tide rip. Tie a bunch, when they're hot they're hot. our best day was 42 before lunch and 42 after lunch. Good luck!