This is what I know and understand about Turkey hunting in Maine.
Two seasons- spring and fall
Spring hunt is by permit only usually falls in May
Permits are by random draw-12,000 are issued. Drawing is in Feb applications available after Dec. 31
Fall season( archery only ) and is restricted to certain wildlife developement areas (too numerous to mention)
You have to purchase an archery license and once you have that you can purchase a permit for $10 residents-$40 for non-residents
Tagging is similar to deer or bear. Once you have killed a turkey you must attach a tag to it ( it is part of your license when you get your permit. It will have a detachable tag that you sign and attach to the animal) Then you must transport Turkey within 18 hours to a certified tagging station for inspection and there they place a metal "permenant" tag on it.
I hope I have answered most of your questions. If you like I can mail you a copy of the 2003 rules and regs for Maine book to you. If so give me your snail mail address and I would be happy.