I recently did my first topo with the LS and my ATV. Actually, I did a short test topo of my yard first to make sure I had things set right, then did a real one on a job. Here are a few observations about how it went.
I mounted the LS on the front rack of my ATV. I can see it and reach it from the seat. The shot counter has nice big numbers so I can see when it takes a shot.
In the past when I've done this with my old system (SurvCE - Auto by Interval), I don't change the antenna height when I put the receiver on the ATV. I just keep track of which points are from the ATV and which are from the pole. Then when I'm done with the ATV, I put the receiver back on the pole and stake out several ATV shots, save them, and in the office, calculate the average elevation difference between ATV and pole, and adjust the ATV elevations. I get a double check on a few points that way, and I don't have to remember to change the antenna height and change it back. I don't always have a flat surface and an assistant available to measure like Adam mentioned, and I also figure that the ATV antenna height changes some with load, tire pressure, soil, etc., so that's the method I've chosen.
Hence my question above about staking individual trajectory points. I was able to use the map to get really close to several trajectory points using Collect instead of Stake, so that works fine. It might be nice to be able to inverse to individual trajectory points by selecting them from the map.
I like that the trajectory doesn't clutter the map with points.
I like it that the LS has memories for different antenna heights. It would sure be nice if I could attach a name or description to the antenna height, and if it would remember whether it is a slant or vertical height.
It would be nice to be able to adjust the antenna height of a trajectory in J-Field. The LS does a great job of shifting coordinates around every which way.
I also found out that M-Local does not move a trajectory. I had to apply the shift from my auto base to M-Local myself.
When I export points from a trajectory, it names them DefTag-1, DefTag-2, etc. Carlson Survey apparently has a 9-character limit to point names, so when I try to import DefTag-100, Carlson Survey chokes on it. So the first thing I tried was to change the name of the trajectory and re-export from J-Field. That didn't help, since the points aren't named the name of the trajectory. They're named the ShapeTag of the trajectory and I don't see how to change the ShapeTag of an existing trajectory.
Overall, I'm quite pleased with how it works. The more I use this machine, the more I like it. It keeps improving.