you should try a lightbar with a map painting feature.

I would say the EzGuide 500.  $3000. 

I can drive well enough by the map made on the screen if i have to do a point row or fill in a pot hole and don't have to reset my ab line.  I can drive as good or better with that than with foam I would say.

You could get the 250 for under $2000 but it is a smaller screen, and you need away to keep both out of the rain or take them off or put in shed at night.