I practice all field positions, I use a log or my shooting vest instead of a tripod, no mat; and shoot every day no matter the weather.
I usually shoot groups for testing off a log at 250 yards. Here is today's shot, the last of which, to find when my bore is fouled enough to group tightly, with this load.
If I shoot off the log, I'll use a sand bag in front, a beanbag in the rear. If off the vest I'll use only the beanbag.
My vest has everything I might need for regular maintenance with any of my firearms; as well as assorted camping essentials.
It is a load bearing vest as issued to Ohio National Guard personnel, with a few additions and modifications.
If I use the AK, (unless I am testing for precision,) I'll have all my gear on, get into the prone position as fast as I can, (with out any rest,) and take the shot as quick as I can accurately... unless of course I take the shot in another position, but I'll still shoot as quick as I can be accurate.