I haven't read all 30 pages of this thread so apologies if you mentioned it, but who owns/operates this trail system? Is all this equipment your own personal?
The only groomed XC/snowshoe trails here are private ones run by resorts (though some are open to the public). Those activities as well as dogsleds are permitted on snowmobile trails though. Most of those are on private property where owners have given permission, and are maintained by local clubs (with financial help from the state).
There are trails for non-motorized recreation in the national forest, but these aren't groomed.