I would not recommend that any client of mine speak to police outside the presence of their laywer, and certainly NEVER completely absent assistance of counsel.
There are too many people in prison today who thought they were "doing the right thing" in speaking to police, perhaps as a cooperating witness, perhaps as something else, that eventually found themselves indicted and then convicted of a crime they didn't commit. It happens, and it wouldn't be hyperbolic to say it happens all the time.
Men died for your right to remain silent, and we should honor their sacrifice by exercising that right, always.
“Call 9-11 and die (or let the other person die).” Other than that, I see no problem with your advice.
I have to agree with you on this. For reasons I won't go into again, but I have detailed in other posts.
Being innocent AND honest can net you a lot of aggravation, if not real trouble. It is instructive to always be aware that the police (even the honest ones) believe everyone is a liar. This means you and me.