If you want a challenge with a Bull Moose, calling is the way to do it. It does require a good bit of scouting, but if you find a good location, lookout! I found this page that might interest you :
http://www.kayas.ca/lifestyle/hunting/moosehunting.html
Hope this helps, I do know of a couple good guides if you need an assist. Mark Luce
www.hindsite-deer.com