I'm a long time truck camper, and am now considering adding a fifth wheel to the mix. I was thinking toy hauler, but only because my wife and I each have bicycles. I know a toy hauler might be overk...
We mounted a front hitch to our F350. Put both of our bikes on there. You can clearly see them and the view of the road isn't obstructed. We use a bike rack that the bikes rest on their wheels and not hanging. It works very well for us. Only drawback is that they do catch a few bugs.