Has anyone thought about or made their own version of the "Air Grabber " ??
It would take a bit of work, but doable. I was looking at an air grabber at a show recently and thought a linear actuator would work well to open one. Something like in this link. It could be controlled with a one touch power window unit to be auto up/down, self stopping! 6000N 1320lbs Heavy Duty Linear Actuator 12V Electric Motors W/ Motor Controller | eBay