This study found that snowmobilers in Maine generate large annual expenditures, and increased expenditures observed over a two-year period are due largely to a dramatic increase in non-resident snowmobilers. This growth is attributed to more active state- and local-level promotion as well as a good snow year in Maine relative to other regions.
Reiling, S. 1999. An Economic Evaluation of Snowmobiling in Maine. University of Maine Department of Resource Economics and Policy.