I have seen the discussion at several forums over time and have sat in on many a discussion concerning the topic of legally using two-way radios while deer hunting. So I fired off an email to Me DIFW and below is the response I got.
They would be legal to use for communicating with partners but you must be sure that they are not used to drive deer in any way.
Wendy L. Bolduc
Maine Department of Inland Fisheries and Wildlife
284 State Street
41 State House Station
Augusta, ME 04333
Telephone: (207) 287-8000
Fax: (207) 287-8094