I have an Extreme under a 2006 Wakesetter. Very nice trailer, but there are a couple things I don't like. The minor one is the license plate mount. It is on a piece of sheet metal hanging down from the trailer. Everytime we go in/out of the water, the mount bends. Not really a big deal. The second issue may just be me or our ramp. It seems like it is really hard to get the boat back on the trailer. I come in with the rear ballast full to try and get the bow higher, but it seems like I have to drive/crank harder than I should. When the boat is finally cranked all the way up, the platform is a couple of inches below the water (which doesn't happen with 11 people and full ballast). Like I said, it may just be that I haven't find the proper method, or it may just be the way the Extreme/Malibu combo is.
On the positives: great swing away tongue, strong brakes, great spare tire mount, led lighting, etc.
Even with my complaints, I'd buy another one.