No problems at Doggie Doo Run Run over the last week. I just avoid Harlow.
There was a dog today that was quite excited by the golf balls in my pocket. I just carry these for defense. I have heard they use them out West to scare off coyotes by tossing them at them. Actually it is Chicago.
Geneva Adopts Plan to "Haze" Coyotes | NBC Chicago At night, I often carry some too in case a coyote or other critter comes after Beau. I stay away from the ponds as I doubt if they would work all that well with an alligator or anything else with a very tough exterior.
How to haze a coyote (without being mean) | MNN - Mother Nature Network
I think I would try other things before throwing the golf balls at the coyote like blowing the whistle I usually carry as well as yelling and just acting like a crazy human as the above linked article suggests.