I've get a him/he maybe once in every 15 outings. It's never been malicious and I try to not make it any more awkward by just ignoring it.
My very first time out, there were a group of young teenagers who stalked me around the mall. Again, I just ignored it and they got bored.
I've been very fortunate to have never had to even have a conversation about it, let alone get confrontational.