Is it really possible to unload out of range or out of sight of every enemy unit?
In my current game (in 1952 so no fancy vision kit on either side), enemy infantry squads are mostly being spotted at either 50 or 100 meters, so any unload operation is going to be risky. This battle has no front line, my advance units have driven past enemy formations that suddenly pop up, and then die quickly cos they're surrounded.
The scouts and scout helos don't do much better, in fact several of the scout helos are now burning piles of wreckage on account of not scouting well enough
Mitigating the risk of unload is a good idea and when it suits me I'll unload in a nice safe place. This can depend on how long the game is, the faster but riskier tactics may be worth trying. So sometimes I'll get the troops stuck in, and take the losses. No pain, no gain.
cheers,
Tim