I fish SE Wisconsin a lot and 10-15ft is a luxury some days. I treat it differently depending on where I’m fishing. Super popular metro lake, I expect to be crowded. Now, when I’m in Northern Wisconsin or Northern Minnesota, I would hope people would try to give a decent bit of space. I don’t mind if you swing by and we have a conversation at all. I have no problem talking about what and how I’m using things that are working. Most times if you’re struggling where you are I’ll invite you to move closer, but don’t start right on top of me.
The only time I have no problem being crowded whenever or wherever when I’m out is if someone has kids with them. Then come as close as you want and fish any hole I’m not in. Seeing kids outdoors and having fun is something I will never get upset about. Hell they can even pull in tip ups for me if they want.