Upstream from the "Hippy Beach" -- large sand beach, that is not the take out used by rafters, is a feature we've always called 'Dead Dog." It forms over a rock on river left about 2 yards from the bank at flows around 9000 (I am guessing -- it's been a while). I believe this is the next feature downstream from white's just before the river makes a light right then left.. It's not visible from the road, but look for the turnout just before the road is very close to the cliff and then drops down towards the ranch (coming from Moab). It's been a long time, so I am a little shakey on this one.
Trash Compactor is visible from the BLM signed Sandy Beach parkig area. (There's a shitter there, but not at Hippy Beach.) I think it's a low water feature...
Sorry for the sketchy details