My dog used to pull me all the time. She got in some good exercise and I didn't really have to do anything. Just make sure you get a harness and not just a collar. As for rollerblades, don't be cheap. The more expensive ones are much more comfortable and smoother. You'll get killer blisters with cheap ones. It's been a while since I've done it or even looked at inline skates - but just try some on and see what feels the best.
