Landon, the one I'm talking about is actually within sight of the parking at 512. After 369 leaves the AP campground (NO OVERNIGHT PARKING ANYWHERE THERE)and turns to gravel maybe a 1/4 mi.on the left is a parking area.It's basically southeast of the parking on 512.Just past it you can see the bridge where you turn left onto FR 512 which has parking on the northwest side of the river. Either of these may have parking available and combined would hold 10-12 vehicles. All other THs are on gravel roads, so these are prime spots for those not wanting to go long slow narrow distances. It's about 6 miles up to the Falls from there, IIRC. There are plenty of spots at the Fall TH, and Winding Stairs which is about 2 miles west of AP on 106. There is also parking farther west on 106 at the West Blaylock Cr. TH, as well as limited parking at the Upper Lil Mo TH where it junctions with ABF.
I sent the info on campsites to Luke so he can look it over. There was a link to a pdf I couldn't attach here. He can post his thoughts then.
If anyone needs gps coordinates, or directions to trailheads feel free to pm me.
I'll be happy to provide any other info I can.