I looked long and hard at the double hitch receiver noted above, and at the idea of carrying bikes between the Motorhome and Toad. Ultimately, chose not to go that route, because:
1. Most hitch mount bike racks, when you look closely at the warranty for such, it says they are NOT recommended or supported, to be used on the back of an RV. I only found 1 or 2 specific models that allow, support this kind of use.
2. We found that with bikes mounted that way, it is impossible when unhitching the toad, to fold up the tow bar. Bikes would have to come off whenever you unhitch. For us, this just wouldn't work. We like to unhitch (and fold up the tow bar) before we get to our site in some cases, when at campground that have tight, narrow roads going to the campsite.
3. With our tow bar (Readybrute), Using a dual hitch receiver and bike rack physically would not work - it would get in the way of the Readybrake actuator arm.
4. We like to be able to carry the bikes on the towed vehicle (Ford Fusion), because sometimes we want to bring bikes places we can't bring the Motorhome very well.
For last few years, we carried bikes on back of the toad using a hitch mounted rack. That worked OK, but eventually got to where didn't like them back there, either. Just seems like a lot of weight to be hanging off the back, where you can't even see it. That, and didn't like how it blocks your access to the trunk back there, as well as makes your tail lights tougher for anyone to see.
Soo, a few months ago, we went to using Yakima roof racks on top of towed vehicle. Like this arrangement sooooooo much better, wish I would have done it from the get-go!! Much easier to get bikes on, off of there, and much better for the bikes, since they aren't rubbing against each other like they were before. That, and like how trunk access is no longer blocked, and tail lights are clearly visible from behind.
Yes, roof racks are expensive, but I highly, highly recommend this approach over anything else if you possibly can do it. I got all the parts for mine via Craigs List which made it much cheaper. Like said before, wish I would have gone this route from the beginning.
