I just avoid tapping a small area near my LZ. Even with a level 8 blast it's ok. Once that area needs to be tapped to clear handshakes I pick another area close-by to leave ready.
I'm sort of with Max on this that neighbor visits are only a big deal for events, and even those lately have been only a small portion of whats needed to achieve the goals. I can tell the difference between a dead town and a freshly cleared town and I'd much rather have neighbors who play a lot even if I have to skip them once in a while. Even if someone got mad and mistakenly deleted me because I didn't have anything to tap who cares. There's always plenty of fresh names on the add-me threads.
The IRS is a very well executed awesome addition to the game. This 'downside' is a non-issue IMHO.