Bike rack -- we used a three-bike rack on the back of the Boler
for our big long camping trip (seven weeks) a few years ago. We travelled from the mountains of BC to the prairies and back again.
The only problem we had was in "flat" Saskatchewan! We chose to take an old, weathered highway instead of the TransCanada, and it had numerous pot-holes. "Washboard" road conditions.
So when we reached our next overnight, we saw the outer-most bike had bounced along on the rough pavement, and had a flat tire, no rim damage. We had been packing the kid-bike closest to Boler
, then mom bike, then dad bike (the biggest/lowest.)
We then started to pack them in the reverse order: big dad bike closest to Boler
, then mom bike, then small kid bike outermost. Solved the problem, any small dips in road did not affect little bike.