Last campaign I ran, I just had my players go by standard TW rules as far as turns, fire rate, movement, and so on, because I was feeling lazy and we were using a hexmap. However, I still had them using AToW rules for skill rolls. I feel like houseruling in double-blind bits would be appropriate - visual range is 60 hexes in clear weather, for example, but they'd have to roll Perception to actually see something moving at that distance - and requiring Sensor Ops rolls to detect hidden targets at certain ranges.