I am going to raise it off the ground. I was planning on using concrete deck bases for that, with a 12-16" post. I am not sure if I need a poured concrete base for those or if I can just dig a hole, put some gravel in it, and place the base on top. I have never used them before. I am definitely going to raise it though.
for a coop 2x6 should be plenty.If you are using a concrete deck base,why not just put it on a concrete paver or big flat rockunder it.If and as it settles you could always just jack up that side and re-block it level.
If you dig you really got to get down below the frostline or you are wasting your time.For a coop that may be overkill.
I like putting them on 4x4's with beveled ends so if I ever need to move it I can.I still raise them up on cinderblock and pavers or flat rock. Have fun.I wish I could help ya.I been itching for a project.
Look under my coop at the block and skid. Will