If you are having trouble culling various types of bass or sunfish from your ponds -- have you thought about inviting Condello over for a fish fry? Bruce is basically a "fish whisperer" and a heck of a good person to get to know personally
Having grown up using "duPont Spinners" (as my uncles called dynamite when using it for fishing) I don't think I could reasonably recommend them. They can really ruin a reasonable fishery for quite a number of years. There are a lot safer and legal methods available.
I'd prefer hook-and-line, seines, or traps.
However, this time of year, if you live in the right place, you could gather a bunch of black walnuts. Put them in the driveway and run over them with a vehicle until the hulls are off. Separate the nuts from the hulls. Put the hulls in a porus sack, like a burlap bag or canoe net bag. Put the bag in the pond. See what floats up. Black walnuts are a lot like rotenone. The fish are edible if prepared soon after surfacing. Again -- make sure all of this is legal in your area.
Ken do you think this would kill all the fish or could it be used just to take a few out? How long would the bag need to stay in the pond?
Seems safer than rotenone.
