haven't fished Clyde but back in the day when you could catch them (with regularity) on southern Champlain it was always emerald shiners 3"-4" long, about 6" to a foot off bottom, in 12' - 16' of water. Emeralds seem hard to come by these days with new bait regs. Not sure what guys are using now, but regardless I'd keep your bait close to bottom.