if you decide on thudbuster, the short travel ones work great, Thudbuster ST

I have one on my 29'er, and got another one for my Tellico when it's U.S.E blew a nut

I like hardtails only, with something for the butt to take the edge off. Moxey
and thudbuster, though both are ugly, work great

good luck in your search. it's a great seatpost
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Note: it will be difficult to do anything for the MOxey except an OEM replacement. the forces
in that parallelogram are huge and will destroy any half-a&& solutions you try, IMHO...