Hello! I totally get what you mean — that manual digging takes forever. You might want to check out a post about this on the Speeding up Construction blog
https://speedingupconstruction.blogspot.com/2025/09/fence-post-driving.html . They describe how to use a helical pile machine, which basically drives posts straight into the ground using a hammer mechanism. The process is simple: you secure the post, align the pile driver, and let the machine do the heavy work. It can be manual, gas-powered, or electric, and works well for wood, metal, and reinforced concrete posts. The best part is how much faster it is compared to traditional digging. The article also mentions that even though the equipment costs a bit or might require hiring a specialist, the saved time and effort make it worth it. If you’re after efficiency, it’s a great modern alternative.