Thornwood Park Pictures
This is Thornwood Park. It has two baseball fields, tennis courts, and a jungle gym. There would be very little room for a skatepark. I DO NOT recommend this as a place for a skatepark.
This is the North-West corner of Thornwood Park. There is some area that could be potentially used for a skatepark here, but it is not recommended. Most of the East side of the park is empty, and it is the only site on Thornwood park where a park could be built, but it is right up against houses.
A park at Thornwood could be very long, but not necessarily too wide as to stay away from the baseball fields.