Try placing a small dot sticky on the windshield near the dash that lines up with the outside stripe on the road, or in this case the boulders on the side of the road. Keeping that dot lined up with your eye will help keep the coach to the left of those obstacles. I go to a lot of football games with cones wide enough for a Prius. I have two dots on my windshield; one for the left (middle stripe) and one for the right (right side stripe, mailboxes, boulders, cones, etc.) The first time I drove this beast I could not keep off of the rumble strips on the other side of the line. Now, piece of cake!
state college, pa