I've got a popup (tent) trailer and need to carry 6 bikes. I'd prefer not to put them on the roof of my van (the roof rack is rated to only 100 lbs and it's really high for lifting bikes onto).

So far I've found this one: http://www.discountramps.com/pop-up-camper-bike-rack.htm

But I also saw a Do It Yourself design for one that is a lot simpler. It would be great to find a simpler less expensive one like that to purchase.