Ed, many of the local big box folks carry a sheepskin cover.  Taking off and
replacing the armrests is a very simple task involving only a light hammer a
5" long 1/4-20 Capscrew/bolt and about ten minutes per seat.  When the arm
is off the pivot, take the opportunity to tighten down and lock the pivots.
Put the seatcover on, use a boxknife, the one they won't' let you carry on
the plane anymore, and cut little holes for the pivots.  Then using the
method posted previously last year by me, (good training for reviewing the
archives) put the armrests back on and motor gloriously.  However for the
first few days stay away from coyotes, sheepdogs and similar.