[Mobhack]

Using the W key is useful if you have a decent anti-tank weapon (and don't want to trigger an assault and suffer the possible adverse consequences of same). My later war UK platoon HQs will usually use the W key to fire only the PIAT at any armour at 1 hex.

Against a soft target - it is probably not worth it.

Any other things - probably best to simply turn off any weapons you want reserved (eg a satchel charge perhaps) and then press F/click on target.

Andy