No one will ever tell you this. Some of the best places to explore up here can only be accessed using a stern tie. Your going to find that single handed stern ties become second nature. I do stern ties all the time up here and quite often single handing with no real problems. The advice you have been gives here is all very good.tell me to just not go places where this is required.
I have a permanently mounted 500' sternline on a spool. You will find that this setup is very common on boats up here. It makes life a lot easier but is not a real necessity if you only do it once in a while. You should use floating line.
Have a good trip, Steve