So I bought an ergotron arm and a detachable vesa mount https://www.amazon.com/dp/B01BTAAUV8/ref=cm_sw_r_cp_apa_glc_fabc_1643NVP0T0KYZ1QKHP64?_encoding=UTF8&psc=1 For my cintiq 16. If you were to attach a piece of wood instead of the cintiq it should work fine. You don't need the detachable part but I like the freedom to take it off without unscrewing anything.
I have monitor arms with vesa quick releases like this. Could possibly use that on your hotas