17 EH? and you're how old now? 50? ;-)
I'm 48, and yes, the Full Bores were still going the last time I wore them ('05 Adelanto GP).
Took fastidious care of them, cleaned them with saddle soap, neats foot oil, shoe polish, a trip to the shoe repair guy in Eagle Rock every now and then, when something got torn or worn out (like the straps).
People were amazed, I was on top of crash hill at El Mirage a few months ago, and some kid pointed out my boots to his dad "Look Dad, Full Bores!"