"Did you get an auxillary tranny cooler yet?"
Naw, I only tow it about 30-40 miles at a stretch & Tranny heat didn't seem to be an issue. If I ever decide to tow it down to Tennessee (Watauga Lake) I might look into it.
"Don't you guys have trailerbrakes?"
I'd love to have surge brakes on it, but it wasn't offered & I have too many other "honey do's" on the list to tackle something like that right now. I've been thinking about getting a trailer for a 21 foot boat & modifying it to hold the boat & both jetskis but so far it's just a concept in my head. I also thought about putting a receiver on the back of the jetski trailer & towing the boat behind that but was told it's slightly illegal (even though I've seen a couple of other people doing it this year). In either of those cases, I'd definitely add surge brakes (P.S. I hate electric brakes and would never go that route).
"If I were to tow a small trailer with say, a Polaris Rzr or a quad, would I need a tranny cooler?"
It's never a bad idea to add the Tranny cooler but I don't think that it would be necessary in your application. Basically, you need to decide based upon: the maximum load you'll be hauling, terrain (lots of hill climbing will certainly bring up the tranny temps), and environment (if you're running through Death Valley in the summer, you may want the tranny cooler even if you aren't towing anything).
Johnny - How long did it take before you started breathing normally again after that? I did that once with a heavy load of firewood in the back of my ol' Dodge.