I think that all of our common pond fishes, including TP, will stray from their safe havens to some degree and risk predation. Just my 2 cents.
From what I have read, TP should be stocked at the breeding age, early enough in the season and in enough numbers to ensure that enough fry are produced to combat the FA. Maybe that is for more southern ponds, but I doubt 250 TP fry would make much difference in even a small pond.
I don't have any experience with TP, so I may be full of soup.
