If you can locate a pond or lake with a healthy wild GSH population, you can do what Esshup and I have done and that is using small baited hooks to catch larger adult GSH or a cast net if you know how to use one. I have had luck getting GSH to take hold in ponds when stocking very large GSH. Then again, I have never stocked them into ponds with large NP like yours has... There is no doubt in my mind, a smaller number of wild GSH being stocked has a far better chance of establishing a breeding population in a pond like yours as opposed to stocking a large number of hatchery raised GSH. Sorta like stocking pen raised pheasants as opposed to trap and transferring wild pheasants... You could put out 200 pen raised pheasants into prime habitat and they probably still won't establish a breeding population. You trap and transfer 20 wild pheasants to that same area and you have a decent chance...
