I'm trying to get info on the terrain in units 5,13,131 and 441. I've hunted around montrose and pagosa springs and wanted to move up north but have bad knees and can't walk more than a mile or 2 miles. Any info I would appreciate.
I'd say most of unit 4 has fairly gentle terrain, as far as elk country goes. The national forest in 5 is reasonable too, the BLM in 5 is much steeper.
The public land in 13 is wicked steep, 131 I'm not sure about, as there isn't much public land. Just some STL I think.
Another unit with fairly gentle ground and decent roads is unit 70.
I'm not sure why you were interested in those units, but if it's because of the success rates, they can be misleading in units with large amounts of private land, unless that's what you're looking for.
Moose calling can get confusing to some, but cow calling is your main tool when moose hunting. If you go out and buy moose calls I would say you're wasting your money unless it is the birch bark cone. I find most store bought moose calls sounding worse than puffing a grunt your hands to make the call. You can roll up a piece of birch bark in a cone shape to use as a call and spend your money on a video that teaches you the basics of a cow call. A milk jug or a coffee can with a hole and a rope...