I have not have much luck with spinnerbaits as I have with regular spinners. I love regular spinners, and I fly fish mostly though. I do good with jigs too, but mainly I wanted to know more about what spinners, such as types, colors, weights...do good for people.
1. Tandem small gold colorado/large silver willow Spinerbait with white/chart skirt (Strike King-type/not the Terminator squid ones). I usually frankenstein up my spinnerbaits to get them the way I like 'em. I like to start with a Titanium Terminator for the frame, then switch out the skirts and sometimes I'll downsize the rear blade/or change to a tortise shell diamond pattern blade. I also like to swap out the standard silver bb swivels for matte black Sampo bb swivels. Fish scale/natural pattern skirts for clear water. But if I had to pick only one color, it would be white/chart. On some of my tandem spinnerbaits I'll remove the small colorado and turn it into a single willow leaf spinnerbait.
2. Roostertails - 1/6oz. is my favorite size for bass. The color depends on how bright it is, water color, time of year, then other times they'll surprise you and like a color you've never tried before.
3. Mepp's Thunderbugs 1/8oz. Colors: Metallic Blue and Metallic Green. I don't bother using other colors, these 2 colors work when I need them to.
Largemouth Bass is what I use them for. I've caught rainbow trout on them, but not many, mostly works for bass. The rainbows I caught were from high mountain lakes. Metallic blue seems to work great in high mountain lakes.
My buddy fishes with a crawfish colored rooster tail (the orange one with black dot things on it) and I don't think I've ever out fished him for bass (or anything for that matter). He literally buys as many as he can at a time. I'm not sure if it's the rooster tail, or the color, or more that he's just a fishy guy.
I guess I have not seen that exact one you are speaking of. Sounds like a winner though. Some people can catch fish on a beer bottle cap. They are just good at fishing. Sometimes I'm hot, sometimes I'm not when it comes to fishing. But I usually do better than average. I will look at the stores for the lure you are talking about, and keep it in mind. Yes, the fish must like the crawfish color.