Depending on how heavy the aircraft is, they can be quite high. The attached shot kinda gives you a guide on that.
These shots were taken from there with a Canon 100-400mm at a focal length of about 135mm and 190mm.
http://www.jetphotos.net/viewphoto.p...639974&nseq=47
http://www.jetphotos.net/viewphoto.p...xif=1#exifshow
As Krishna mentioned, the dog park is also an option, but only in the afternoon. Have a look at this
Google Map for the specific locations.