I guess you could plug in any three species on any body of water and invent your own grand slam. Here on the Pocomoke River, it’s a rare day when we don’t boat a slam of some sort. Of late, it’s been pickerel, crappie and yellow perch. The occasional bluegill and largemouth bass can be added to the mix as well. Later on, white perch and hickory shad might join the crowd. Fishing the Pocomoke is a lot like Forrest Gump’s proverbial box of chocolates, “You never know what you’re gonna get.”
Josenhans Fly Fishing Blog 