Trajectories are very “odd” to say the least to get used to at first but they work great once you get a feel for how to set them up.
You’ll need to set up a specific profile and you want to absolutely set the minimum engines to at least three engines - I’ve actually used a minimum of five several times. If you don’t set this higher than two engines you’ll get a ton of “bad shots” while driving. By setting it to three or more you’ll eliminate most, if not all of them.
Once you set your trajectory parameters of 2d or 3D distance for shots and have it in the profile that you’ve set up the chosen minimum engines you’ll watch the screen and see it store a shot every 10’/20’ or whatever distance you chose.
If, while driving, it falls under the minimum engines you’ve selected, just stop for a few seconds until it acquires the minimum number again and if it’s passed the distance interval it will automatically store a shot as soon as it does.
You’ll also need to use “tags” instead of codes or descriptions for each individual trajectory - ie “topo” or “T” is what I use. Each one you start will collect until you hit stop - 10 points to hundreds of points - depending on how far you drive.
Exporting the trajectories is also a bit different. You’ll need to scroll through the export screen until you find “all trajectories as points” or something similar - I’m not looking at my LS right now. When the correct tag/button is found, it will export all your individual trajectories at once. Just draw points in Acad (if that’s what you’re using) as they come in - don’t worry about point numbers or renumbering.
Draw the entire site you’ve topo’ed at about 0.1’ intervals at first and you’ll immediately pick up/see any anomalies of bad shots if you have any - they will be off in elevation and will “show” you an obvious high or low spot that looks abnormal....
If there are any, you can quickly identify them and delete from your file. Then, once those are filtered out, draw at interval you want/ need and then copy/paste those contour lines to original coordinates in your base dwg. (I do all the topo in a “trajectories” dwg separately for simplicity’s sake, then just copy out my final contour layer).