dude i always thought about it but my local park is right next to a police station and its private property so id get a big kick in the balls if i tried it...but if it wasnt next to a police station id be all over that
why don't you just ask permission? if it's a private park then whoever owns it is probably down with action sports, and if it's public (which is more likely) then it's your right to use it in the first place.
i got kicked out by the po-po for shredding the bowl at the oxford skatepark in oxford maine.. aparently jumping over a locked gate is trespasing. Who knew?