I don't remember the details, but 25 years ago I hired a team of
professional piano movers to move my Weber Duo-Art grand across
Pittsburgh.  The crew consisted of three small, stocky men.  The foreman
took one look at my grand and whistled "Whoo-ee, that's a *reproducer*!"
He'd moved a few pianos in his lifetime...

Anyway, I seem to recall that they positioned their skid along the long
side of the piano, removed the lyre (!!!) and then removed the left front
leg while someone held up that side.  Since the rear leg is pretty much
on the left side, there really isn't that much weight on the left leg.
Then they just gently let her tilt over onto the skid.  Strapped her on,
unscrewed the other two legs (OK, leg-pairs on a D-A), and out the door.

Reversed the process at the other end.  No special attachments, jacks,
nor lyre abuse, and not all that much brute strength either.  Sorry I
didn't contribute this sooner, but I wanted to read others' accounts to
make sure my memory wasn't hazy.

Now -- If you want the harness-hook system to let your legs do the work,
go to a sailboard shop that caters to wind surfers.  We board sailors use
exactly this setup to hook into a rope line on our sail boom and save our
arms and hands for control.  The only caveat is that a windsurfing
harness is designed not to ride up on your hips as you hang from the
line, whereas for piano lifting you want something that won't ride down
on you.  But it's a start.  At least get the hook-carrying "spreader bar"
at the board shop.

Funny how unrelated hobbies help each other out sometimes...

Mike Knudsen