I suppose all bike and mounts are different. I adjusted my front mount so the lights shine through the spokes. I had to drop the seats so the did not ride high in my view but they are quick adjust. Certainly no more of an issue then when I attack the front lines on my canoe. My turn signals are wrap around.
I did have an issue with the down drop of the hitch, it would just barely clear a curb when parking and also checked the distance it extended past the bumper. I flipped the down drop to an up rise.
I never had issues with the airflow or temp.
It takes a bit of creativity if you want to carry your bikes and haul a TT.
Putting them inside is not a bad option either if you can clear the door way.