This is something I've planned for years and never done. If you do go, I would suggest having someone shuttle you; car break-ins are all too common all around Fern Ridge.
I don't know if you live in Lane County, but outside of town, police patrols are sparse. Also, there are restrictions about parking after dark in a lot of spots...especially Kirk Ponds.
If I'm going to be away from my car, I usually take my ol' beater pick up and leave it unlocked with a club on the steering wheel.
Haven't fished Coyote much. Caught a small bass from the bridge. Wife caught a nice Rapala from a tree!