My opinion: (not necessarily the whole story).
In the wide open, it's gonna work great.
In the trees, it's going to fail some.
I like setting it to record every second, and to not record if it does not move by at least a foot.
Now, I can go fast, where the grade is even, slow over bumps, and shot density goes up. Go slow under trees, or obstructions.
It's handy. You can survey both sides of a road, in the wide open, and you get alot of information. Survey the white line on the edge of pavement, both sides.
Some county roads, under trees, run slow under trees, but run 2x. Both directions.
When you first start learning it, take full verified shots at cl Ang PTS. Then, use trajectory, both ways, then when you analyze it in the office, you have redundant data, to comprehend it all.
In office, I put trajectories on their own layer, so I can freeze them.
In office I can trace my final cl, with a 2d polyline, then freeze the actual trajectory.
I like trajectory.
Nate