A large squid pole on a summit immediately attracts the attention of other people. Even if no sound can be heard (because I’m always using headphones). If the summit is crowded, you don’t have to wait long until the first person appears and starts asking questions.
Unfortunately people tend to show up right at the moment when the pile- up starts. Then, because I don’t want to stall the pile- up, I just hand them a SOTA- flyer and mumble a few friendly words. I’m sure I could have explained better if there was more time for a chat.