Can you park in the street next to the ballfields??  Make up some business cards and network yourself out there.  If you can’t find an event “sell yourself” for private parties, birthday parties, car dealerships.  I used to vend at the local ATV dealership on Sundays which was good money most of the time.  Look up the chamber of commerce in  your area although some cities that are small do not have one.  I’m sure you have other ideas, but at least you are sticking with it and not quitting.  Good Luck.    DD