Thanks guys for the suggestions . I have neighbors real close that I'm sure would take exception to the noise . ( 16 within 1/8 of a mile ) I haven't seen a sign of a fish so maybe they ( cormorants ) solved the problem for me . I called the state fish and wildlife office and they don't issue permits for this state and the feds only allow control in the southern and a few Midwest states . There is a 60 ac. state owned lake about 3/4 of a mile from my pond that the state stocks with catchable sized trout that the public is allowed to fish during the spring summer and fall . The last time I visited it there were at least 75 cormorants there waiting for the hatchery truck to arrive with dinner . I don't have a chance of making this fish thing work here with a non-stop supply of birds flying over .
Maybe I'll buy a couple of alligators and put dry suits on them in the winter .