I don't know why I haven't thought of using mowzer hydraulics for things like that....
I've seen some lever bead breakers that probably would be perfectly serviceable and maybe easier and quicker. I've even watched some wooden ones work for small tires on the youtube. I was close to building something but didn't like my scrap options and not having a plasma cutter makes me lazy, so I just kept using the air/hydro jack. A heavy frame to keep things aligned wouldn't be bad but just using a 6:1 ratio on a lever would probably work just as well and (maybe?) be quicker.