Crawdads (northern virile) hatch in the early to mid spring around here and the trick would be to transfer females carrying the eggs prior to the hatch into the pond. A few carrying females could seed a pond given good habitat, but I missed that date at my pond and bucket stocked about 300 in to my pond over two summers. I think that was a bit overkill, but I may have a small boil this summer if I can find a willing participant or two to help.
If you have a good source for the craws (maybe even free), I'd stock a hundred per year (post hatching season) to keep an eye on their affect on the BOW...or a dozen carrying females pre-hatch). Keep in mind that I contribute some my turbidity issues to the craws and the lack of veggies growing in the water.
