1.Carry a small plastic or tin can (bean) with a hole in the bottom, put a skate lace or leather boot lace about 4-5 ft long inside it, have the knot sticking out the bottom. get the lace wet and give it a long pull...old time cow call. Give it a short pull with more friction...bull call. Costs about .25 cents and totally functional, you can play with the tone by wrapping the can with cloth friction tape.
2. In the rut, use a decoy made of black landscaping cloth. Cut in the rough shape of a cow moose, add grommet holes and tie it to some brush when you set up. It rolls up compact and works awesome...cheap and fits in your pack.
3.Listen to the above info about judging moose.
You can practice by using horses for reference if you have access to them, they are closer in size than a deer which is what most guys are used to.
4. Shoot for the center line vertically behind the leg which will give you more room for error than focusing on the bottom 1/3, they will die just as quick as the arrow still takes out the lungs. The last 3 moose i have shot have all been hit at center or a hand width above. I have been involved with a couple that have been shot too low behind the leg, they can go a long ways with that shot and it looks perfect when you watch the arrow blow through.
5. If you are having a hard time judging distance, close the distance, moose inside 10 yards are huge and even I can't mess that up very often.
6. Draw when they are not looking at you, get them to pass behind a tree or something to hide the movement otherwise you are in trouble, they are huge and you still need the broadside shot, it is easy to stick an arrow in the guts when they spin which never makes the pack job shorter.
They move a lot quicker than you would think.
Terry