For the pike - big, gaudy, flashy streamers, as you would for musky. Also, try some big surface flies - poppers, mice. The surface takes can be explosive. And don't forget some bigger baitfish imitations (think perch).
Walleye - leeches, muddlers, leeches, smaller baitfish imitations and leeches.
Most of all, Crowduck is renowned for its population of trophy-sized smallmouths. Work the weedbeds.