We have a (new to us) 1997 C36 MKII which has a keel steped mast. We have pulled the mast this year to check out the rigging and add some thing to the mast. We understand this is the first time the mast has been removed My question is how long do Catalina Mast Boot last? We do not plan on pulling the mast again for 3 years. Should we replace it now or can it go longer? The boot looks ok to me. Thanks Rich