RE: ground hunting?
My first year and a half of hunting I hunted on the ground.
Inever saw anything while I was still hunting, but when I set up a tripod stool near a trail that had fresh tracks, droppings, and a few good rubs I had 2 shot opportunities.
One was too early (before shooting hours opened) and the other I had 4 does walk straight toward me. I got busted when I tried to draw, but I never got winded or heard. When near a trail, try to stay out of their line of sight.
It's tough on the ground: hard to see things that you can hear are there, few openings to shoot through, and it's easy to get seen,heard, smelled.
Good luck.
Keep 'em all in the Bull.