Oh, it's no real trouble getinng "out" of the ground--when I built it, I followed some instructions for flagpole construction in this area (hurricane country).
1. Cement a piece of 6-8" dia X 4' long pipe in the ground. (flush to top of ground)
2. Drop a brick, rock or other hard object down in bottom of the 6-8" pipe for the pole to sit on.
3. Drop the flagpole down inside the bigger pipe, and center it.
4. Fill the cavity between the flagpole and bigger pipe up with clean dry blasting or kid's sandbox sand, except for top 2".
5. Fill top 2" with silicone--one full calking tube did it. The rubber silicone is both a bumper and a seal.
This allows the pole to have some 'give' in strong winds instead of bending, especially if ya have a wind or breeze that is predominantly from one direction most of the time, with really strong gusts only every once in awhile. Hurricane approaches, ya just break the seal of the silicone by picking up with a fel or chain & high lift/track jack and let it fall over.
The hard part, was getting it to stand up vertical, even with the backhoe bucket. It took all I, my wife and a neighbor could do, because they couldn't get the pole to break over to full vertical while I was on the backhoe.