I have the hydraulics on mine too so we could sit and do the longarming. But I stand all the time because I move around so much while longarming. Plus when the computer is doing the work I don't stand right there all the time - I go quilt or do paper work and designing.
I also have a carpet/mat to help with the leg strain.
Phyllis
QuiltingGrannie
Quilter's Pantry