You're not his mother. It was his lack of discipline. If you have to adjust your riding style every time somebody looks at you you are basically saying it is your responsibility to adjust your style depending on who is around, which is not true. As long as you ride safely and at your skill level, you've been sufficiently responsible.
I don't agree that it's his lack of discipline- it's completely his lack of skill, knowledge and experience. It's not like he was riding, and someone fell in behind him and started following... that person is on their own. But when you're chatting with someone, and they ask to ride with you, the first thing I do is find out what their skills are. If I don't feel like towing an inexperienced rider around, I'll tell them I'm not comfortable towing someone with less experience at that time, please ride a safe pace, and if I get a couple of turns ahead, don't worry, I'll wait at the next stop or turn. If you're not willing to do that simple little step to help keep a newbie safe, then tell them you're just going to chill, and head out later, and then leave after them. You'll pass them at some point, throw the wave, and keep going. Considerate and helpful, and no one gets sucked in due to inexperience.
Always a liability issue.
Connie, do what you want. Use your method. You don't need approval from anyone. I'm stating my opinion. no worries.
Have fun teaching!
WHY do you keep coming BACK???
I don't understand the idea of "towing a newbie" and observe him in the mirror. I find it much easier to observe by riding behind someone.
Because what's easiest for YOU isn't what's best for the NEWBIE. They don't know the road... when you tow them, you show them where they should be in the lane, what the turn-in points are, what corners are tricky... you think a newbie is going to do really well on a deceptive decreasing radius? Not so much.
The most informative, best, oh-my-god-how-could-I-learn-so-much-in-20-miles tow I ever got in my life was 4 years ago on my birthday from tzrider... Andy willingly jumped in, and towed me up Mt. Hamilton, showing me where to start my turns... it was the BEST birthday present I have ever had, and provided the most improvement I've had in my riding at one time.
THAT'S why you tow him... you're not observing him- you're TEACHING him.