I love it when you have a nice cap on an nme field, a nice little vulch going on, and some dipsh*t comes in and drops just one or two FH's while leaving the VH up. Now seriously, what's the point? You have not affected the enemies abilites in any way. You have simply wasted your time and ordinance.
If there is a decent CAP over the base, hitting anything other than the VH, town, or AAA is a waste of time and is actually detrimental if/when you actually take the base. That's how it is. Anyone who disagrees simply does not understand how to effectively take bases in this game.
6-10 skilled JABO's, using the above method, backed by a goon or two, can steamroll enemy bases, on the order of two or three an hour. There is no other method as effective.
Hitting the FH, fuel, ord, troops simply impedes your own progress once you have taken the base.
Hitting any of the above, or "porking" as most call it, should be reserved for only when you are being overwhelmed and have lost the friendly CAP.