Yesterday I noticed that coons had started working on my sweet corn patch, once they start the patch is history in a couple of days.
Here is my crop after a coon assault a couple of years ago.

I put out my live trap, baited it with cookies then decided to put a couple low strands of electric fence around the corn patch.
Got up this morning to check my trap, I could see from a distance the trap was sprung, the trap had a nice red fox in it instead of a coon. I let the fox out of the trap unharmed.
The electric fence kept the coons out of the corn, at least for now.