That's the beauty of shop-built teardrops, they're all unique.
I'd guess you'd want less tongue weight for the UTV? If you're going with a Dexter Torflex, you could weld on two sets of mounting brackets, one in a position for your truck TV and one set forward with UTV in mind.
Here's a thread on axle placement that got my attentions:
http://tnttt.com/viewtopic.php?f=35&t=49993It's got this quote: "According to teardrop rules of thumb (see outback.com) it should be 34.5 from the rear on an 8' trailer, and add 6" for every foot. So for your 5x9 it would be 40.5" from the rear." Outback.com will take you to the steakhouse's website, so dunno about that part of it.
You might try starting a thread specifying your axle placement issue.
'Been cranking on a little 4x8 for my sis. I'd say it's about at the 60% done point.
Tony