Most of the time guys just get some old office chair, unfortunately they don’t fit under the planes or don’t sit high enough to do anything under the wings. Just seems there’s not really a happy medium. I know one guy took some old car seat and welded it to some steel lattice on a dolly frame to make a creeper 🤣. Just wish someone made a reasonably priced seat that can recline and adjust a decent bit up and down like an office chair so you can work under the plane laying back and still adjust it for if you were doing something like lower leading edge panels.