I don't really remember where Hillsboro is anymore, near Portland I know. Years ago I was a member of the Port Van Pointing dog club and we had playdays out on Sauvies Island and in Vancouver. In Vancouver I think I took 4th Plain exit and went left then drove on out to suitable areas. Come to think of it used to go to Sauvies Island to fool with the Springer people also. Sauvies Island was good. Cross the bridge and turn left and go on out. Several places out there that worked well.