How many jacks are usually found on Minuets?
The only standard jack on the Minuet was the manual tongue jack. There was a separate option available for either front, rear, or front and rear permanently mounted stabilizer jacks (BAL). Since the Minuet was generally targeted at entry-level buyers when new, I suspect that the stabilizer jacks weren't popular options - - my '78 Minuet came with no permanently mounted stabilizer jacks as verified by the original owner when I purchased the coach 18-months ago.
One problem that I would suspect with the rear stabilizer jacks appearing to be missing - - with the minimal ground clearance (especially if your axle has begun to deteriorate as mine had - - it has now been replaced with a new DuraTorque with 500 pounds increased capacity) in the Minuet is that they were drug off on some service station driveway along the line - - I have lost a half dozen termination caps from the dump valve on the Minuet in less than two years. Hopefully with the new axle and its nearly 2" of additional clearance this will be a problem of the past (my ball height on my hitch was nearly 1.5" too high (with Suburban as tow vehicle/Cadillac was easy to tune for correct height) even with the deepest drop Reese drawbar available prior to the new axle) - - I am now one adjustment above the lowest setting on that dropped drawbar
I am considering starting with a set of stabilizers on the rear as that is the point at which single axle coaches can tend to become "tippy" without support. Haven't had this happen with my Minuet, but with my previous Nomad 1800 single axle if you happened to use the shower without stabilizers in the rear at the most inopportune moment the coach would salute with its tongue while the rear bumper made friends with the driveway. I have noticed some movement but thus far nothing as serious as my old Nomad's tipping.
They are taking forever to arrive. The ones for Airstreams have longer rods to clear out to past the curve of the under body.
This is another of those areas where our Minuets may be a "special-case" since they are 8" narrower than the standard coaches they may fall somewhere between the normal BAL stabilizers and the special Airstream BAL stabilizers. I haven't checked with the Airstream dealer who does all of my repair work, but it is something that I am considering this spring as part of my pre-trip check-up for '78 Mini.