My new boat and trailer are both registered in Az. I would like to keep the boat reg. in Az but I'm not sure if the trailer needs to be. If I decide to register the trailer in Ca. what will happen of I show up at dmv and they start asking questions about the boat too? the boat will be used mainly on the parker strip. are there any dmv's(ca)along that area where I can put the boat in the water and then go register the trailer?