Review of Drop-Tail Trailer: Pros: Bought this last October, have only had time to use it once to carry the Spyder. Very easy to load, my RT doesn't scrape at all, it's a perfect fit, and there are lots of tie-down points. It's also flat so you can use it for other things as needed. As modified, it's also very easy to move around.
Cons: Nothing holds up the tongue, it just rests on the ground. The trailer is steel and fairly heavy. I about got a back strain trying to lift that tongue to hitch it the first time. The trailer is also nearly impossible to back up -- it's very short and therefore extremely sensitive to tow vehicle steering inputs, far more so than a boat trailer. It's even worse if the Spyder isn't aboard because you also can't see where you're backing. The solution to these problems is a swivel jack with a caster. This thing is grrrreat! Drop-Tail doesn't sell this, God knows why - I got mine from etrailer.com. This attaches to the pipe mount on the trailer and lets me crank the tongue up and down while the caster lets me move the trailer around very easily. So easily, in fact, that I don't even bother backing the trailer up, I just unload the Spyder, attach the swivel jack/caster, then detach the trailer and push it up my driveway (uphill) where it needs to go. This is 1000 times easier than trying to back it up. Unfortunately the swivel jack/caster does have to be removed when the Drop-Tail is actually hitched - there simply is no room to fold up the swivel jack like you'd do with a similar device on a boat trailer.
For those who want to fold the Drop-Tail - it's not that hard to fold up the tail. That will save you some horizontal storage space. Folding it up vertically is a lot bigger deal. It's definitely a two-man job and they'd better be strong men because this thing is darned heavy. If you plan to store it vertically inside your garage, better check your ceiling height because it's not short when vertical according to their specs. Because of this, I opted to store my Drop-Tail outside horizontally with the tail folded and a tarp over it. When tarping it, I had to build a wood structure to put underneath because water was pooling on the tarp due to the trailer design (yes, it rains in Las Vegas).
Another "con" is quality. On my first trip, both turn signals and one brake light failed. Drop-Tail was no help at all. I took the trailer to U-Haul and their tech quickly discovered that not one, not two, but THREE wires were not properly attached at the factory and were hanging loose. One wire had not even been stripped properly. The trailer should never have left the factory like this. All in all, I'd say both the problem and Drop-Tail's response were an embarrassment to American manufacturing.