There is an area on the south side of the lake where I often go bike riding. The trail is called horseshoe. I think the park is called Oak Grove. There are lots of trails along the shore and through the woods. You'd have to scout it to see if you find what you're looking for.
There are entrances at both ends. This google link is for the north end, were there are some private boat slips. The road that shows in the map is actually gated off. No driving. Only foot and bike traffic.
http://maps.google.com/maps?hl=en&ie...09645&t=h&z=17