I have RARELY seen a relative newbie rider comfortable riding at a drafting distance that would do either him or her any good. So, when I feel someone on my wheel, I start pointing out the hazards, and I don't start hammering the pace. I have maybe 15-20 yrs of riding left. I'm not going to waste them worrying about something silly, or acting like a dick.

BTW, I hooked my TT partners wheel in a driving rain some years ago about 150 yds from the finish. He didn't even feel me auger in. You guys fret over some crazy stuff.