We found this in our new neighborhood.  If you drive east on Duval from 183 for a block and turn left on Cow Path until it ends, you can enter the park.  We followed along the right side all the way around and it's only about a mile, so we reversed and took some of the inner trails and stretched it out to 2.5.  While it's not long, for the area it is in it's a beautiful wooded park with a lot of nice trails.  If you go out the west side at Riata there is a lake, too.  While normally a park this small wouldn't be noteworthy it has a lot here for the space.

Since we couldn't do old hancock we drove down here (I didn't have this printout) and found the trail.  The picture map shows 8 miles on this peninsula but if you start at the beginning you can do about 3 in a loop.  It is very hard to follow sometimes but use your best judgment you'll find the correct route.  We saw the 1 mile map but then it headed out to the lake and we got lost and just went back. We should have followed the shore.  Was hot but quite a bit of shade at least.

As mentioned by another in 2010 they must have done something to the chain area as it does NOT look like it does in the picture.  I didn't like this one the other time we did it, 5 years ago, but liked it better with more rushing water this time.