Northeastern Mt is a very general direction .Narrow it down a bit and maybe I can give a little help for a do it your self hunt.
Get some BLM MT maps and look there is 10's of thousands of public lands out there.
Example
http://publiclands.org/products.php/MT/370953
Opheim a small city NE MT.
There is a huge wildlife area up there that borders Canada
If you cant find a calling spot just there I'll eat my map...
Stop in to our FWP sight and check out the reg's.
http://fwp.mt.gov/hunting/regulations/nongameShooting.html
http://fwp.mt.gov/hunting/regulations/predatorShooting.html
About all you need for predator hunting would be a "State use permit" like $10 bucks.
Let us know how you do.
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Coyotes-R-Us
It's all good all the time