I was wondering how hit & run attacks and using the ship's crew as away teams is resolved game wise?

As I recall (books not with me right now) the npc raiding party or a player character plus npc raiding party make a piloting roll modified by the turret rating of the ship they're attempting to board within 5 VU. If they succeed, then they get aboard and a command check must be made (don't recall what modifies the command check) to choose a ship location to set off explosives and causes damage to the ship that avoids armor. (After the attack, they must flee back to their ship for a small raiding party would never be able to go against a crew of 20,000 over the long run). I don't remember if it can be any location, or only those known to the players (a enemy ships componets can be learned from a scan using the players ships instruments) If the original piloting check to board is failed, then the raider returns, and if it fails by several degrees, it is blown up and all aboard killed, including of course the player.

Again this is all from memory, so there may be a few errors, but that's pretty close.