Screw them and their tags..
I would stay in the area you got action there, there will be more moose in the area. Try moving off a bit not to far but move some. Try 1/2 mile or a mile area in the vicinity. Remember you are calling you don't have to be right on top of them they will come to you. It's nothing to have a bull come a few miles to a call. If it's a heavy quaded area they may be machine shy. Like Paul says get up early and I would suggest parking and walking in the last two miles early in the morning, even if you park your quad at legal and start a slow quiet walk in a give a sad horny whale next to the ground now and then every 10 min or so as your walking. Stop listen for 5 min after you call, eat some willows, then move on slowly again go a couple herded yards give a little moan, walk a bit stop eat some willows, listen. Remember you are a moose act like it. ( by eating willows I mean just rustle some willow branches and make some discrete noise nothing loud just some animal sounds )