trailer for cp 23/3 d

[petrel]

Greetings,
    I am looking for information on a trailer for a Com-Pac 23/3. I have contacted Roadking, Triad, and Trail Rite. None of these companies have the specifications for the trailer for the Com-Pac 23/3. Does anyone know where I can get these specifications?  I was not able to get them from the Com-Pac manufacturer. I am purchasing the boat, from out of state, and I have no way of getting all of the measurements required.
   Thanks for any help that anyone can give me.
                                                              Robert