Hi Chucky,
Looks like this was your first post. Welcome to MySwag
I'd suggest you post a couple of pics of your trailer and the creative tinkerers on the forum will have a better idea of how to tackle your problem.
Many here have come up with heaps of different solutions.
For myself, I ended up squeezing 2 x 100mm conduits between the guard and tent top on one side.
Link to a pic below.
http://www.myswag.org/gallery/d/20991-1/IMGP1916_1.JPG
I also have two sideways conduits between the toolbox & trailer tub, but not every trailer has enough room in that gap.
If there is simply no room outside, you could partition off a narrow section on one side of the tub.