As someone who has been falsely accused of theft a time or two, the problem with Hawaii's "proportional force" laws as they pertain to property rights is that they allow somebody to initiate force after making a snap judgment on a situation. (At least that is my understanding.)
Imagine you're walking along a trail and somebody who is certain you just stole their avocadoes runs behind you, pepper sprays you, and starts beating you and rummaging through your stuff looking for avocadoes.
You think what the hell is this, and are concerned over your life because some whacko is attacking and robbing you, so you stab them.
Now who is at fault for this situation?
I don't know the best system but everybody should be extremely wary of initiating ANY force. If "nonlethal force" or "proportional force" or whatever can reasonably be responded to with lethal force, is it really nonlethal force to begin with? I'm philosophically inclined to put all force into the lethal force category, because initiating force is intrinsically escalatory.