On flat ground, or in small plots where the 'perfect' approach is unworkable, a highseat is a hugely valuable tool to ensure that a safe trajectory and backstop is achieved.
The dilemma is whether to build a wooden permanent seat, which allows you to turn up before first light at any given time, or invest in a modern metal seat that can be transported to multiple sites but requires a bit more planning if you want to have one in place ahead of a morning session.
Often the answer to this dilemma is dictated by the site. Is a permanent structure likely to be vandalised or used as a tree house? Is access with movable seat practical? There is no generic best option.
That being said, a homemade or purchased fixed seat has the ability to be bigger and offer the shooter a better body and resting position when taking a shot.