Keep looking on craigslist. That's your best bet. Look up different key words like "PWC TRAILER, Jetski Trailer, Seadoo Trailer etc."
Or, if you're desperate, make a jetski stand and just load it up on the back of a pick up to get it home.
http://www.theudells.com/PWC/gallery/dan/gtxsc_stand/IMG_3105.jpg
Maybe wrap the bunks with some towels or something?