About the automotive units in general and Harbor Freight cheapie unit
in particular. http://www.harborfreight.com/1250-lb...lly-67287.html

I looked at the HF unit and here are some comments;

1) It can be adjusted fore/aft for some pretty small tires including
the common 350x135 glider tires. I don't think that it will "pinch"
tires (as mentioned by Dave Springford). YMMV.
2) If the width needs to be narrowed, the HF unit could "easily" be
changed (cough...with a hacksaw and muscle). However, the wider
stance may be good for stability and dealing with #3.
3) The jack handle may need to be bent or adjusted to get out of the
way of the fuselage (as Steve Leonard mentions) while still retain
functionally. The other brands mentioned above tilt the entire lift
mechanism, not just bend the handle. This may be the trickiest thing
to correct but may be unneeded due to #2.
4) Sure is cheaper than the alternatives! Allows for low cost
experimentation!

- John