I decided to head over to Metro Airport after work tonight. I found what I thought was a potential spot for planewatching. It was Vining Road between Eureka and Pennsylvania in Romulus. I thought that I would have a good view of both runways in use.
When I got there, I found out that it didn't go as far as I thought it would. It was closed about halfway between Pennsylvania and Eureka. It wasn't a bad place to park though. It provided an okay view of planes landing on 22L but a better view of 21L. I might try it again when I have a little more time.