Gerard, I've been jacking my LNC2 for years (since '93) with a couple of
bottle jacks affixed to a fairly large wooden base for stability (approx. 18
inches square). On the top of the jacks, I attached wood pads (approx. 4 - 5
in. square) which are topped with 1/8" rubber sheet (gasket material, I
think). The rubber is stuck on the pads with contact cement. I position the
pads just inboard of the inboard and forward of the inboard gear doors under
the main stub spar. The wooden pads are made of oak since it's very tough
and made in two 1 in. layers with a hole in the bottom layer to fit over the
jack head. I never did put jack locating dimples in the bottom of the wing
but have never needed them.

To hold down the rear of the airplane, if I need all three tires off the
ground instead of just one for a tire change, I use a heavy-duty webbed
hold-down strap over the top of the vertical stab attached below to a five
gallon bucket that I've filled with quick-setting concrete, into which I've
buried a length of rebar as an attach point. To be sure the rebar stays put,
the bottom (buried in the concrete) has about a 6 inch right angle bend. I
use this method because I just don't trust the removable tie-down ring not
to release at the wrong time.

The airplane is quite stable with the jacks at these positions and I have
never noticed any problems with the paint.

Regards,

Dan Schaefer