[Imp]

Okay on scout vehicles I have said before sometimes against a human play with a house rule for first 2 or 3 turns only your scout formations can move.
When do this or play as scouts/special forces the vehicles are mainly to get you there & for extraction if things get a bit hot. If the terrain allows they can help fill gaps in your survelance. Changes the nature of the game & sometimes allow a Mech platoon or similar to accompany them. Look at formations & see what they use.

Just like you would be mad to use helos on a map with no cover using a vehicle to watch for the enemy would be insane on the same map. You treat them just like your FOO vehicles they only take up positions where they have an exit route & that you judge reasonably safe. In woods for instance with a view of say 30+ hexes, the further the better. If you cant arrive there moving very slowly its probably not safe & normally what you do is drop the leg guys off & let them take up the position. But there may be another useful nearby location.
Cmon guys whats a scout going to do drive at speed to the top of a hill & stop or get to the hill fast & then make a cautious aproach on to it. I would assume the second as option one means hes a lucky son of a Gun or dead. Even if hes out of range steel rain is on the way.
Low visibility & a vehicle with vision aids now you can look at the situation & role the dice.