Nice houserule, it should work fine.Following on from the points I raised in my original post and the great response I received from Tomas I would like to put forward a suggestion for either a tweak or house rule.
The great thing about this suggestion is that it does not require any changes to the rules but actually uses and expands on them.
The only changes would be adding a couple of sentences and a important point that could of been missed can be nicely included in the game.
Please share your thoughts about this .
What I am addressing is point 5 (of the original post) which was if no cover was available could you effectively hit the deck.
You would only need to add the following sentences:
If no cover is available you can use the take cover action to take position on the ground and gain a limited amount of protection against ranged attacks.
This is in effect reducing your silhouette to such attacks and provides a additional -1 modifier to the to the ranged attack against you.
The minimum distance between you and the shooter needs to be at least the short distance category on table 6.3 to be effective.
While on the ground you may still use the rules for fire support and brace your weapon gaining a +1 modifier to your shot.
If you are engaged by a opponent with a ranged weapon within close range while you are prone you can not effectively defend yourself and are considered immobile.
The attacker gains a +3 modifier to his attack for engaging a immobile opponent see table 6.3 and the within close range rules of the ranged section of the combat rules.
There you go its simple eloquent and just expands on the existing rules .
There are no rule changes just new possibilities and tactical options.
I introduced this idea because in my own humble opinion by accident something was missing.
In every theatre of conflict troops regularly take cover and firing positions on the ground due to the tactical benefits it provides.
I hope you like this idea please post your comments and thoughts.