Originally Posted by
2nd best pilot
When you hold that left rudder, add some right aileron too. Always helped to close the stubborn doors.
Couldn't have said it better.
I concur with this technique. Every top-hinged door I've seen on the Cessna jump planes I flew could be easily and gently closed with this technique. It becomes fairly instinctive after a few loads.
I hope you enjoy your time flying jumpers. Some of my fondest memories are from skydiving and flying in support of the sport.