I've tried to feed train WAE with zero success..if anyone would be able to do it, it'd be someone like Bill C., so I'm not going to say it can't be done. They feed supplemental in hatchery runs up to advance fry stage but around an inch to 1.5" they turn on each other regardless of the amount of food. Once they get passed about 4" you can sustain them on FHM or shiners of some sort.
SMB, yes, I believe that is fairly common to feed train them now.
I have been told by one member here that he feeds chopped fish to walleye that readily come in to that but I'm sure that takes some time to make that happen.
