Or you could just be proactive and go camp the hunt yourself instead of waiting for others to do it for you and tell you when it spawns. Or, knowing it just spawned figure out when it will next spawn and be there. Putting a level restriction on it will just end up making it so newer players won't have help.

Also, if you KNOW people are using 3rd pt software to know when the hunts spawn, as opposed to them just camping to learn tod and knowing when it will spawn again, report them.