Awesome shot and if that works for you, great. But I see two massive tripods. That’s not gonna work for me. See points one and two above.
The second tripod in the video is my buddy's. I only carry one tripod, and only shot off one tripod in my video.
Building a stable shooting position is learning how to use what is around you to do one of two things:
1: support the rifle
2: support your body
Even though it is contrived competition in many ways, participating in the half day local matches will show you a tremendous amount of what can be done. Use your own rifle, and go for the practice making the first shot. Watch everyone else, and get ideas.
Form gave one of the other options with a tripod, and others commented on it later. They are versatile in many ways.
Remember the saying, fear the man with one gun? I say fear the man with one “shooting position” because he knows how to use it. Learning how to use a tripod is that way for me. From pretty much any height, at any angle, and any ground condition I can set up fast and shoot confidently. I use my tripod and practice with it. I can deploy from my pack to shooting very fast.
If you are practicing with gear other than a tripod, you will have to be making many decisions how to modify and they won't have the flexibility that a tripod does. In the end, I can use my tripod from prone to standing, as long as I can get the three legs down.
What happens if your pack is 6 inches too short?
What if the shoot angle is down and you are shooting from the side of a mountain sloping down to the left?
As to weight, how much does a typical tripod/bipod combo weigh that people carry in the field? I would say that it is very possible that my load out is less weight than others with bipod and tripod.
One way to look at it is: How much weight do you have allocated to precision shooting? I think that you can find a suitable tripod to shoot off of within your specs and shoot over sage. Distance you want to reach to also matters.
My load out with my tripod and head is 4.25 pounds and you could get a lower weight tripod kit and still use your tripod in the way that I have learned how. I choose to put more weight into my tripod and leave the bipod. I also want more confidence and a more stable tripod helps with that.
The possibilities are endless how to build a position. But, shooting over sage, and making 400 yard shots is completely doable and can be "automatic" standing off a solid tripod for you and a good rifle system. I think there is a way for you to build out a system that makes a tripod your go to. I know top level shooters that won’t go without one. I also know others who don’t rely on one.