Here is what the LEO emailed me today to give me the exact wording on trespassing. Hopes this helps somebody.
97B.001 TRESPASS.
Subdivision 1.Agricultural land definition.
For purposes of this section, "agricultural land" means land:
(1) that is plowed or tilled;
(2) that has standing crops or crop residues;
(3) within a maintained fence for enclosing domestic livestock;
(4) that is planted native or introduced grassland or hay land; or
(5) that is planted to short rotation woody crops as defined in section 41B.048, subdivision 4.
Subd. 1a.Outdoor recreation definition.
"Outdoor recreation" means any voluntary activity, including hunting, fishing, trapping, boating, hiking, camping, and engaging in winter sports, which is conducted primarily for the purposes of pleasure, rest, or relaxation and is dependent upon or derives its principal benefit from natural surroundings.
Subd. 2.Permission required to enter agricultural land for outdoor recreation purposes.
Except as provided in subdivisions 5 and 6, a person may not enter agricultural land for outdoor recreation purposes, without first obtaining permission of the owner, occupant, or lessee.
Subd. 3.Prohibitions after notice.
Except as provided in subdivision 6, a person may not remain on or return within one year to any land for outdoor recreation purposes after being personally notified not to do so by the owner, occupant, or lessee.
Subd. 4.Entering posted land prohibited; signs.
(a) Except as provided in subdivision 6, a person may not:
(1) enter, for outdoor recreation purposes, any land that is posted under this subdivision without first obtaining permission of the owner, occupant, or lessee; or
(2) knowingly enter, for outdoor recreation purposes, any land that is posted under this subdivision without first obtaining permission of the owner, occupant, or lessee. A person who violates this clause is subject to the penalty provided in section 97A.315, subdivision 1, paragraph (b).
(b) The owner, occupant, or lessee of private land, or an authorized manager of public land may prohibit outdoor recreation on the land by posting signs once each year that:
(1) state "no trespassing" or similar terms;
(2) display letters at least two inches high;
(3) either:
(i) are signed by the owner, occupant, lessee, or authorized manager; or
(ii) include the legible name and telephone number of the owner, occupant, lessee, or authorized manager; and
(4) either:
(i) are at intervals of 1,000 feet or less along the boundary of the area, or in a wooded area where boundary lines are not clear, at intervals of 500 feet or less; or
(ii) mark the primary corners of each parcel of land and access roads and trails at the point of entrance to each parcel of land except that corners only accessible through agricultural land need not be posted.
(c) A person may not erect a sign that prohibits outdoor recreation or trespassing where the person does not have a property right, title, or interest to use the land.