Stop aiming at your thumb.
This is very much like the one I use, it folds, to fit in a pocket, red tapered bands are about 30 percent faster. and I removed the magnet in the pouch, it just got in the way, and felt wrong.
I hunt squirrels and rabbits with it.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.