My limits I have no issue of walking away, once user error had been worked out of it (which it now has). I had my scope at a recent deep sky trip where i would come back and visit every now and then eg hour to do a refocus check and let it go again while i was roaming around chatting to people.
When I have my scope set up at home I do set and forget runs aka i set it up at about 130 2am (once temp has stabilized and tube isn't shrinking) and go to bed when it goes to do a meridian flip or reaches to within 30 deg of the horizon it parks itself and goes to sleep
If you want ultimate safety have your main power pass though a proximity switch that if the switch is tripped it cuts power to the mount!