William Oliver loves the big bite. Oliver is a 39-year-old multi-species fishing guide from Chandler. He catches plenty of slab-sized crappie, white bass and black bass, but what makes his guide operation truly unique is the house speciality on the menu — targeting whiskered fish with serious weight problems using forward-facing sonar. Jumbo flatheads are what floats his boat the most. Article continues below this ad “Big flatheads have always been my favorite fish,” Oliver said.