In every recipe I've ever seen for a whistler a short shanked hook was always specified.
This is for the jigging action you would not get from a longer hook.
When Dan was speaking at our club this past winter, he demonstrated a whistler for a few of us.
I was very suprised when he used a jig hook instead of the eagle claw short shank that I've seen him use before.
When I asked him about it he said that he liked the action of the jig hook better and had changed his mind.
The simpler the outfit, the more skill it takes to manage it, and the more pleasure one gets in his achievements.
--- Horace Kephart