The drafting thing works much better in bigger groups doesn't it? When it's just the 3 of us we sometimes have to wait up for the third member
I'll get around to doing a decent group ride soon I think. I also didn't care to draft off Dad as I wanted to push myself. I did have to ease up for him but I think that was a good thing or I would have burnt myself out like you said. I went out with him again this morning, only 25km but I think it was a good pace (don't have a computer yet). It sorta depends on work as to how much I can ride during the week because it makes me a little late for work