I guess it would depend on tire size for the dragging.
Hard to tell what the hang over is from the pictures. It does appear that the wheel is a little far forward, but then that again depend on the weight you want to carry in the front compartment.. Just remember if water is part of the front and the wheels are too far forwad the trailer will change greatly with a empty water tank. Not sure what you are trying to do with the trailer.
I assume thte triangle at the top is the tent, originally I thought it was the sides sliding up. I guess we need more explanation of what your goal is and better lay out with measurements.
http://www.megaupload.com/?d=ZNFNZLV0
http://www.megaupload.com/?d=FNJOZGO3
There is two different google sketchup files with the trailer design, all to scale. I could, actually move the wheel close to a foot back, or even nearly all the way back and move the door farther in. Actually I think I will do that now, it makes it better I think.
I planned to put the water at the bottom of the trailer, so its not top heavy.
Yes, the triangle at the top is the tent, I didn't really feel like putting a whole bunch of drawings into making it look nice.
I am still working with all the measurements, but I think the bottom of the trailer will be 18 inches off the ground, then the trailer will be 30 inches tall. Right now in the drawings it is 1 foot off the ground, and 36 inches tall.
The trailer is 10 feet long, by 5 feet wide, im not sure if that is too long, I could easily shorten it to 8 feet. But I don't plan on taking it up rocks, just through the wild, the desert, and across country.
My plan was having the 6 (it shows 4) posts that hold up the tent slide down into the main trailer while driving, but when its parked and ready to camp I could either raise it up another 36 inches, or leave it down.
Please keep in mind that I am very new to this whole expedition trailer deal, and am only 17. But I have the funds and the ability to complete this trailer.
Oh yeah, also I cannot figure out what to skin the trailer with. Using a thin steel sheet would be lighter, but cost more I would think, close to $500 dollars I believe, but some sort of wood also sounds good to me.
I'm open to any ideas that will make this better, and any help in general.
Thanks,
Aaron