Sounds like a tandem is in your future.Right after I bought this boat a bearing went out on 1 of the wheels and left me stranded. That is the main reason for wanting a tandem axle, you can at least tie up the bad axle and make it home. My Champion 190 that I had before this boat had a tandem trailer and I loved the way it towed. The single axle will sway a little more than the tandem.
Good Luck and send us a pic of the new trailer.