I know there are a ton of crawler videos out there but I haven't found any ones explaining what a good line looks like or how to asses a good line for new to crawling guys like me that would be a good help in identifying good and bad ways to take up or across a crawler course
A good line will simply be that...
which your tires maintain surface contact (high points)
and the axles center chunk/undercarriage will clear surface irregularities.
And with consideration of keeping the body/chassis as level L-R a possible.
Meaning: pay attention to the center line of the undercarriage
and suspension components.
Getting hung up on things ruins your line.
Another thing...
In my 1:1 experience...
Many folk just steer and drive forward.
Not taking into account what the arse of the donkey is doing.
That's gonna be a fail in my book every time.
IMO... one must know their vehicle well...
realize it's turning radius and traction capabilities...
but even more importantly...
Understand that the rear tire tracking is something requiring attention.
Meaning: the rear tires do not always follow the tracking of the front tires.
( ^ the exception is when driving in a straight line )
So... not only will you be steering the front tires...
but one will need to surmise where the rear tires will follow
as they track around a turn.
When turning a tight radius...
the rear will turn a smaller radius then at the front.
So the rear tires do not follow the same line as the front.
And instead will turn into that radius before the entry point
of the front tires.
Often the front tires will require that they be driven deeper (father forward) before starting a turn...
so that the rear tires will stay on track and inside the obstacle or on the trail.
Even without 4 wheel steering... understanding your rig
and how the rear wheels will track is something to be learned.
* A good line is something you can visualize completing, before the attempt is even started.