This isn't a discussion about whether you'd do them at all or not but how you'd handle them IF your child did them.
Would you go to the door with them, and go inside with them if the need for that comes up?
Make them go to the door alone and insist they DON'T go inside at all?
Stand behind them where you can be seen by the person AT the door, but so your child could give the sales speech alone?
Or just hang back on the sidewalk where you can kind of see them?
What are your thoughts on the best way to handle this?