I know that this is 2021, but in simple math 2020-50= 1970. I can only comment on Ohio waters from Turtle creek to Vermilion. I lived on the beachfront west of Davis Besse from 1951- 1963. I fished nearly every day during the summer. Then I moved to Ruggles Beach & lived there from 1964 to 1976. I personally know of no one that casted for “pickerel” before 1968 But I know of a lot of people that trolled, including myself, my father, & several other relatives & neighbors. I know Captain Dan Galbincea & others started casting in the early 60’s, but his lure was not perfected & made commercially until the late 60’s. The boom in casting did not really take off until Ohio banned netting for walleye in 1970. With all due respect & IMHO