Based on a conversation today with the current president of the Lake Placid Shore Owners Association (SOA), the access from Chipmunk Lane is no longer permitted. This access has been described in the three previous (11th, 12th, and 13th) editions of the ADK High Peaks Guide, but will of necessity be dropped in the upcoming 14th edition. This ruling applies to all access along the entire west shoreline whether one parks on Chipmunk Lane or elsewhere. The signs on this section have always said, "...At the owner's pleasiure and the user's risk." Now for various reasons (that I won't list so as not to blame any particular user group) the owner is no longer "pleased."
This now means that it is no longer legal to descend McKenzie via the Bartlett Pond Trail, unless one bushwhacks to avoid the private land. Furthermore, the only legal approach to or from Loch Bonnie is via the trail that reaches the lakeshore on a parcel of state land just south of Undercliff. One may still land at the north end of Lake Placid to access Eagle Eyrie as that is all state land. All other trails remain unaffected.
The DEC is aware of this change. Even before this loss of access, preliminary work on the McKenzie Mt. Wilderness Area UMP has included a parking area on Whiteface Inn Lane and a new access route to the Two Brooks Trail via state land or foot trail easements on private land well away from the lake. Whether this loss of access will accelerate implementation of the new route remains to be seen.