Most people seem to run Corran with FCS and Marksmanship... that second attack caters really well to using an APT. The target likely won't have any Focus or Evades to use that late in combat. It is expensive, but it will hit hard.
Anyone know the numbers on that hit with Marksmanship? It seems getting at least one crit is guaranteed unless you roll all hits. I think the best part is that there's a good chance you will end up with 5 hits before defense dice, meaning the crits are likely to get through.