Have to go to geocommunicator, or other site, and/or get real good at map reading and GPS translation to get the TRS then start searching by TRS and plotting them out, and look at all 3 options on LR2000. You might get lucky and find a marker on a tree or post, especially if the possible claim is on a road. Or a marked claim next door to the area you are looking at.
Others can chime in on maybe some better tips and hints.