If you need to get a quick antenna up, you might just go with a horizontal dipole, single band, Its what I do for portable ops.
I don't use a choke, balun or anything else. 1.0 swr and 49 for impedance.
I get the whole antenna up around 20' with each leg suspended in a tree, and the feed point on a pole or tree as well.
I have had a few people that have tried to give me a g5rv antenna, and when I ask why, they noted it didn't work as well as their dipoles they had up, and would rather have a resonant dipole than that antenna.