We twin anchored the rig wreck just when the neap tide was starting to run. It runs at about 210deg for the 1st 2 hours, so we placed the 1st anchor uptide of her at 195deg and the second at 225deg to give a 30deg triangle uptide of her. It was then a matter of letting out warp on both anchors to get over her. We attached the 1st anchor to the bow and the 2nd anchor to the samson post on the starboard stern. You can then fish over the back and port side bumping leads which run into the wreck in a NW direction.
Alan