Unless you have a State Park sticker ($25 annual), you gotta pay $5 to park here (maybe they raised the $5 too.) It's a real short walk back to the trout pond.
A few miles up the road is another DNR facility. Also C&R trout pond. Scuppernong Springs. The walk to that one is about 1/2 mile or so - nice path and crosses the actual Scuppernong Creek that can be C&R fished as well (didn't see fish in the creek last time I was there and never made it all the way to the spring fed pond.) But that's another option nearby.
You can also go down by Whitewater and fish the re-habilatated creek down there off Hwy P. I forget the name of the stream. There are a couple free parking spots and you can wade the river - its maybe 8 to 12 feet wide. More of a real trout stream feel with undercut banks and such. Saw one fish the one time I went there last summer.
I am looking forward to making the drive out to Black Earth sometime this spring. Gotta see what thats like.