A good source of mast sections for field operations is the common GRA4 mast kit offered as military surplus by several online vendors.
In this video from Joe (N9TAX), we see a variety of military mast sections assembled to make a sturdy support for a portable Windom Antenna.
With a little advanced planning, this antenna system can be erected by one person in a short space of time.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=9LFJfAvzty8.
Here are few comments from Joe (N9TZX):