I put a couple of screw eyes(snicker snicker) in the ceiling and put a loop of string through them. Filled a sack with old towels and blankets and made a couple of wire hooks for it. Now I can unhook it and open the garage door. The string loop just slides out of the way. I can't use the target when the door is open but that's not a problem for 3 months. Hung the target about a foot farther away. I could move the machine away but it would start to get in my way.
It seems to work. Catches the arrow without breaking it so far. Tried a few bamboo arrows no problem. Guess my old target was just too stiff.
This is just Mk1, I'll stuff the sack more and maybe put a stiffener across the top. Thanks for the suggestions.