I like Stoney Point products and have many of them, including the Explorer tripod with the Tag-a-long accessary leg shown.
These tripods are better than nothing when you have to shoot from a position, above the prone position, but they leave a lot to be desired. You really have to fiddle around with the Tag-a-long leg to get everything just right (and on target) and it is not terribly stable. The legs are thin tubing and the plastic fitting on the rear leg and tag-a-long do not lock. Moderate friction between plastic parts is all that holds the adjustments.
With that being said, the Explorer is a device that you will get better at using over time. With plenty of practice you will learn just how to use your body position to help support the device and your rifle.
I use mine mostly when shooting varmints from the middle of fields that have vegetation growing in them. One big plus is that they are very light weight. They come with the most useless strap imaginable and plasic clips that are also worthless but they can easily be replaced.
My recommendation would be try it before you buy it. The Explorer costs about $90 shipped and the Tag-a-long costs another $18.
Just my 2 cents