Hi Russell,
I know you are new to the travel trailer scene, you told us. Please tell us what year/brand/model camper, if you use a weight disturbing hitch, and what brand model is that and what the truck is.
Taking bikes to camp many times is a problem. I have had them on the back of the camper, never do that again. I had them on the front of the 2500 Suburban, that worked well for the bikes, but created lighting issues and potential legal lighting law issues. And with 4 bikes, a tranny heat issue. We only had 2 bikes and a mild tranny heat change, my camping buddy had the same truck with 4 bikes and it over heated one hot summer day. He had to take the bikes apart and store them in pieces to get home.
The rear bumper of the travel trailer in my view is a "no". There are just too many issues to overcome. I suspect your camper does not have shock absorbers and we do not know the rear overhang of the camper aft of the rear axle hanger. The wrong combo on the back of a camper can really take a beating on the bike rack and the camper frame pending what you have.
The double receiver idea presented, until we know what tow vehicle and if you are using a WD hitch, the double receiver may not be a working option.
What I ended up doing, after and knowing some of what not to do, was create a 2 bike rack on the A-frame of the TT. This works well, BUTTTTT the A frame has to be able to handle it, the WD hitch has to be able to handle it, the truck suspension has to be able to handle it and the truck receiver has to be able to handle it.
Give us some more info on your setup and we may be able to help with something that might fit.
Hope this helps,
John
