Anyone else tow with standard mirrors?

I always use strap on towing mirrors. Can't imagine not using them. If I forget to put them on I'll notice before I get out the driveway. I recently went on a trip using a 2005 F350 and really liked those mirrors as well. Still need to pull them all the way out for good visibility. I like to keep track of the other vehicle around me so I'm prepared to react in an emergency. I don't want to wait until I need to make a quick lane change due to something happening in front of me to wiggle the trailer, check my mirrors, etc. and then try and decide where all the other vehicles are before I can react. I also like to see cars coming up behind me that will whip over at the last second and go around you. If you can't see them until they are almost passing then it doesn't give you enough time.