I have two hobies, an Outback and a Sport. After a lot of research, I ended up buying a SNOWBEAR trailer from Home Depot. Seems much sturdier than a lot of others. Has a lot of nice features, including changeable axle and tongue length and with the kyaks loaded I still have room for my bikes. You can also use it to load a lot of junk (rated at 2000 lbs), when you are not moving the kayaks. I just put my yakima towers and 58 inch bars and they seem to fit fine--I crimped them on the welded handles on the sides. Tomorrow, I will try to put the yaks on. I will let you know how it goes. The other thing I liked was the price--699. I got 10% off for military--(Memorial Day) and when I finally walked out with the guy, I noticed that one of the fenders was a bit bent and rusted, so, he gave me another 50 bucks off.
I think I will need a can of rustoleum, but, all trailers rust.