Mike
I'm not a graduate of fish-stocking school - nor fishery management in general. However, after reviewing your original post, I would question the stocking of that many LMB in a 3/4 ac pond.
LMB are better utilized in larger ponds. Catfish are probably a better bet for your situation.
Also, did you frequently and regularly visit your pond after the original stockings? Every couple of days? Weekly? Monthly? Depending on the regularity of your visits, fish kills could have occured and gone unnoticed due the the efficiency in which nature can clean up the mess.
