that's a cool setup. Do you have problems with her crossing behind the bike? Do you work one dog or two with it set up like that? I'm trying to see the support for the rack- is it attached to the seatpost at all?
I also keep mine on the right side- that way I can get them onto the grass as much as possible too. I also use a martingale style collar when Iuse a collar. If they like to pull, I let them- it enhances their workout, so they wear a padded ski joring harness. The dog that doesn't like to pull just wears the martingale collar. They generally stay in their places and ignore other people and dogs. They only lunge if they see rabbits, squirrels, or deer. Once they find out they are not going to get to chase it, they settle back down.