This issue has been around for as long as the M3 has been out. DJI is not interested. The easiest solution is to buy another drone which has DSK availability. It is unfortunate as the M3 is a great drone which is under utilised.
I am doing land surveys in Indonesia using drones and ground surveys. Typically I will merge an orthomosaic image into my autocad drawing. I would not do it any other way. It is far better than just having a line drawing. Currently I am doing a 65ha site with existing buildings and the...
And to add to all of the above, besides being slow & smooth, think that the drone will not fall out of the sky (or it shouldn't) as you are in control.
That is a question that has gone through everyone's mind at some time. Fast forward with some experience... I do nothing, maybe cancel the call. The drone will not fall out of the sky or do something irrational (famous last words)