@OffRoaderX We don't know how the OP plans to mount the antenna for his proposed repeater. He may very well be within one of the propagation nodes for whatever antenna he chooses, and then, he may not be. Your testing of HH with your repeater's antenna above you has you within an area of very low propagation for your antenna and therefore, your results are applicable only to you.
As to suggesting amateur radio, this is an option just as using GMRS, MURS or FRS are options. GMRS and amateur radio services are the only services having repeaters available for use by other licensed users and therefore fill the requirement for repeater availability. It is well known you are a vehement adversary of ham radio preferring to classify all amateurs as sad hams. Does that make you a sad GMRS user? l believe you need to be more moderate with your tar brush remembering when you point your finger, three are pointing back at you.