Bruce,
If your Roadmaster tow bar is like ours (a Falcon-II), you can disconnect to leave that one bar attached to the tow vehicle and fold the remaining two arms horizontally against the PC. That is how it is intended to be stored, using the included on-RV storage bag. but I never do that because this method is easiest to me. If I need to drive the PC on a real road, then I remove the bar altogether. But most often I only need to drive around the campsite or to the camp ground dump station. I drive slow with the triangle pivoted to one side because it will fall either left or right. I would never drive on a real road with the tow bar like this.
Pivoting right, the bar gets in the way of opening the storage compartment. Pivoting left takes a little care as not to bang into the spare tire cover. It sounds bad but really is nothing. Keeping the triangle together makes hooking and unhooking real fast and easy. With Irene's assistance, we can unhook in 45 seconds, re-hook in about 3 to 4 minutes when considering the safety stuff. A rare oops at a gas station and it becomes valuable information.
Regarding the bike rack, without a tow vehicle, the bike rack goes right into the PC hitch. When towing, we ended up mounting a class-III hitch on our tow vehicle, a Jeep Liberty and let it carry the bikes. That worked out quite well because we'll drive the Liberty to where we want to start riding our bikes. That also reduces the weight on the PC, the tongue weight, and maintains easy access to the rear compartment which is handy when leaving the camp ground for the final time while all hooked up, I need to get inside there for the fresh water hose. Yes I could store the water hose elsewhere....
Note the bike rack on the Liberty
