The publishers, with institutional modesty, introduce Gadabout's folksy commentary as ""the most famous angles since Izaak Walton."" Gadabout is a kind of Beverly Hills cowboy in seven league waterproof boots whom twenty million people are following with ""their picture boxes."" His television show which has been snowpiling through the years has an ""unpretentious simplicity."" That's for sure, and so does Roscoe Vernon Gaddis, who tells all about his itinerant childhood, and a wonderful old grandma who taught him to draw his catch in ""easy like"" and some migratory years, traveling, riverboating, selling, and finally hightailing it all over, on camera, from Florida to Cape God (""When God created beauty, he didn't forget a place called Cape God.""). Yup--easy like--start with 17"" to measure and screen that audience.