I kind of want Kyle to move but he constantly visits me and sends me gifts I feel our friendship is too high. How can I lower it so he stops and leaves me alone?
That is a myth lol, not true at all. As long as you don't talk to him for a week, he won't ping you or send letters. Lowering friendship won't make a difference though.
If you want to get someone off your property 1) net 2) pitfall 3) 4 days forward 4 days backward and see if any villager pings you 5) if no ping 1 day forward 6) not villager you want off? repeat