My trailer is A 1997 KARAVAN WATERCRAFT TRAILER Model WC150084W it is a 2-craft (ski jet) trailer.

I did not have to widen it.  I moved the tires back for weight and balance (tongue - hitch weight).

  I removed the water craft stuff and added the ramps and other things to make it work for me.

I still use the winch to pull the plane on the trailer.