Please share your experiences with catamaran hull cradles? How durable are commercial (e.g. fiberglass) cradles? How long do cradles last before the fiberglass fails? Does special hardware (e.g. nylon washers) need to be used to attach fiberglass cradles to a trailer in order to prevent the fiberglass from cracking at the area of attachment? How often does the marine (e.g. bunk) carpet need to be replaced? How is the carpet attached to the fiberglass? Does anyone use a lubricant on the carpet to help the hulls slide?

Thank you in advance for the information.