I can't stand wobbling or jiggling. That's why I went with the French easel and the Yarka.
However there are things you can do to effectively deal with it.
Do NOT screw the release plate into the 1/4" insert. Mount a "cheese plate" to the bottom of the pochade and attach the release plate to that.
Do NOT use a little tripod with a chintzy ball head. Use a video tripod with a fluid head or pan head - preferably with a 3/8" rather than the 1/4" screw. They are not all that heavy and not all that more expensive - but a must if you want a stable pochade.
Do NOT use a big heavy pochade box. One that looks really interesting to me is the U Go. Under 2lbs and has torsion hinges to hold the lid. These are incredibly strong hinges that blow away the type found on most pochades.
On a mast-type panel holder, the bottom cross piece needs to be long. Many have little three-inch bottom cross pieces - replacing with one six or seven inches plus long will make a big difference. (Mast-type panel holders don't wobble, but they jiggle). My field easel was unusable IMO until I did that...
So which is better? Also keep in mind how you like to work. Is panel at eye level more important than reducing fatigue on your arm?
All the above is
my conjecture, based on limited experience - so keep that in mind.
here's a link to a cheese plate - there are many to choose from
https://www.amazon.com/gp/product/B00X5NXSRQ/ref=ox_sc_act_title_1?smid=A22PRX6WI8E2K6&psc=1
here's a link to a video tripod - I know one person that uses it, but no experience with it myself
here's a link to a U Go - zero experience with it, but looks good imo
btw - the link E.J.H. gave for the diy palette box looks like a good design.
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