A Jayco Baja is supposedly a good offroad trailer. I looked at one before I bought the Kodiak 166E. Here's a discussion about it:
And specs on it:
Pros (compared to a hybrid trailer like my Kodiak, or other hybrids - Jayco, quite a few other brands):
*13" ground clearance, low profile while traveling.
*Large toy-hauler area on front of trailer, as well as outside storage
*DC/AC converter in the trailer
*Sewage drain pipes and valves are up high as a result of the 13" ground clearance
And that's about it for the pros, IMO.
Cons (again compared to a hybrid):
*Lack of secure inside storage.
*Lack of inside storage period when traveling
*Lack of privacy and conveniences in the bathroom.
*Small fresh water/black/grey tanks. (In fairness, a lot of the hybrids have small tanks. One of the main reasons I got this Kodiak is because it has the huge 52-gallon fresh water tank as well as black/grey tanks that are 2-3 times larger than other makes).
*Only 150 lbs less dry weight than a hybrid
*Just as expensive as a hybrid
*Air conditioner has to be bought as an option
*Huge tongue weight when the front storage area is loaded up.
The main problem with the Kodiak is the lack of ground clearance. It has about 6" as is with the 205/75/14 tires on it. It's possible to do an axle flip (which is how the Baja gets that 13" of ground clearance), but then you run into maybe some stability issues on the highway. It's a wide trailer, 8-ft, so that is helpful.
I figure I can get a 225/75/15 tire on it though, so that gives me 2" more ground clearance right there. In fact, I'm pretty sure a 15" Toyota truck wheel will fit the axles with the 4.5" 5-lug pattern.
The problem with hybrid trailers is the low-hanging sewage pipes and valves, maybe the rear stabilizer jacks, maybe too long of a rear porch if you get too long of a trailer. Everything else is pretty high up.
I figure just the 15" tires get me up to 8" of ground clearance, that's a big help.
Aaaaand, that's my contribution. I did quite a bit of research since I was considering offroading with the trailer as part of the buying process.