So are you going to be modeling NVGs to look through for the pilot, because that is the only way IR is visible, not by the naked eye. It wouldn't be very tactically sound for a Joe to have a flashing light marking his position that was visible to the naked eye. Pretty much a dead give away for the guys shooting at them to know their location.
A flashing IR strobe light on the breast pocket of a soldier is not a very good idea either. Not only would it be difficult to see from the air, every time it flashed the soldier's PVS-7/PVS-14s would wash out and he would be in effect blind and combat ineffective.
You mentioned gunships, they normally use beacons to track the location of friendly troops, they are tracked by the radar.
When stobe lights are used, they are not attached to the troop, but in the general area. This was my experience anyways, all units have different SOPs but like I said it isn't a tacticly sound battle plan.
Maybe you could model VS-17 Panels for tanks?