It is a common method of fishing here in California... especially in the Spring and Summer months. We don't use the spinners as much but we have good success with various types of Flies. The fish aren't usually very big but on a slow day it can make the difference between 'Skunking' or not.
Went crappie fishing April 1 and The casting bubble saved the day. My leader was 20 inches of 6 lb flouro with 1 bb splitshot 4 inches above a #8 gold aberdeen hook, tipped with crappie minnows or baby shiners. Casting very near the bank--upper end of reservoir where the channel swings next to a steep bank, flat out produced. A 100 fish day for my partner and myself. I won't mention the 1 to 1.5lb crappie, but what I want to mention is that a half dozen warmouth and 8 bluegill of 7 to 8 inches,(about as large as the system contains) came into my boat because they ate minnows. Anybody else catch many gills with minnows? Anyway just another example why this simple overlooked method should be in your bag of tricks.
I use then to throw my rubber spiders for gills. They work really good if your using spinning rods to fish for gills with the rubber spider you get much more distance and can cast that rubber spider. Hope this will catch your interest it doe's work quit nice.