A check cord, and wild caught pigeons work the best for this situation........wild caught are better because they will not take people, or dog pressure. Quail at this point arent good, because they will also allow dog to get itself in a bad predicament.......they will try an hide in grass, end up caught, or run a bunch and end up possibly getting caught.
You can card board bird, or allow it to completely leave.......What I do, is take a longer cord, like 20ft, and I will cross wind the dog, I will let it take enough cord, to get to the bird and bump it in the air.........but will not allow the dog any movement forward. So the dog starts putting two an two together, it understands that it doesnt get to go further forward, once the bird is bumped, so it will then start standing an watching, before you know it, the point kicks in or comes back. This will be something that Rob from bear creek, and Mike P "grouseman 2" are discussing on talking about at a seminar I have been invited to give. We will post more on that later, but if you want, your welcome to call 859-985-2918 or pm me, be happy to help ya, its a simple fix usually, just gotta help the dog, not force it. It hasnt got a thing to do with "whoa" the dog needs to point the bird, not you, Thanks Jonesy