for some reason a glow engine will attract people from all over...like ants to a picnic...
so here you are all alone at your park, you start up taxi into position and take off the next thing you know your surrounded by kids and parents..the runway is gone cause there are kids all over it....so what do you do you're now flying a plane with a sharp object on the nose (spinner) followed by a rotory knief (prop)
IMHO flying a glow powered plane in a park is a law suit waiting for a court room..stick to your field