Best Flightmode for Dolly Shots

Hi everyone,
I got two copter one xugong with auav-x2 fc and a x8 with pixhawk for eather gopro cam or 360 Videos. Both copter have a Gimbal exept for 360 shoots. The actual firmware is AC 2.4.5.

I would basically know how you guys are doing nice steady “dolly shots” with Arducopter? What are the best flightmode for that. What parameters do I need to tune to get a smooth coopter? Do I need to play with expo?

Any experienced video pilots with arducopter around?

Hope to get some ideas to got better results.

Thsnks

Is sports mode still the way to go? I mean there is no gps in this fm. What if I would like to do a mission, would it be possible to soften the loiter mode or the poshold mode?