I have an encounter coming up in a few episodes where our heroes, who have swoops and a moderately armed airship, will be tasked with stopping an Imperial convoy consisting of four speeder bikes and a transport landspeeder. I'm not so worried about the landspeeder as they will have to disable it before trying to break in to free the person they've been hired/sent to save (protected by stormtroopers of course).
What I am worried about is that the during the vehicle portion of combat the heroes will try to take shots at the pilots on the Imperial speeder bikes instead of the bikes themselves. This will be so they can claim the bikes afterward and add them to their armory. I turn will simply have any speeder bike with its rider slain crash into something and blow up. So I have a solution to that.
My question is how to deal with heroes firing on the riders of speeder bikes instead of the bikes themselves. The rules are kind of nebulous on what kind of cover the vehicle troopers will get and what kinds of things the heroes will have to be on top of to shoot at their riders while trying to pilot their bikes.
Any thoughts on how the rules work on this situation?
Many thanks.