Here is how you kill gunships. Take the baseline scout, upgrade the lasers, use the engine refill, barrel roll, sab probes, damping. You are invisible outside of 15km range to gunships since they all stack damping too. You close the 15km in 2s with a barrel roll and a bit of boost. You lock a sab probe and wait, most gunships blow their engine ability. If they wait too, close to <1000m and release. The hit can't be avoided from that close. If you can't finish a gunship with its steering and engines disabled you're a bad. Problem solved.
Why would you take booster recharge? Use EMP with Shield to engine converter for shield component. Works way better.