How do I beat a super tanky list?

My friend who I play with most of the time (and usually defeat) has got me stumped. He's been playing a 34hp build, 3 B-wings and a YT-2400 (various upgrades, changes every so often). All PS2. The only way I've had a good game against this build is by outswarming it, to get more shots on target... But how could I beat this/what strategies should I use with a more conventional tournament viable build? I've successfully burned down the YT early with minimal loss, should I just run away after that, until time expires? Seems cheap, but was wondering what you guys would do in this situation. So your opponent sets up 3 naked Bs in a line, on an open lane, and offsets the YT to the next decent sized opening in the rocks. What do you to to combat this, with your preferred list?