Hi vils4usc
I think I recall putting adjustable side bites when thrusters first became popular.  The fin boxes came that way before they were designed as a permanent fixture. 
I don't record every design change I make and definitely don't date them.  I'll take that back, I did get into putting dates onto surfboard templates when I made them, and fin templates too, but not all of them.  When did this all start?  I have 53 years of templates stacked all over the shop.  Most have nothing but names written on them.  It would be way too much of a project to sort through and put in chronological order.  They are now in order of size and curve and will stay that way for ease of locating.
So what all this means is that with more than 30,000 boards to try to sort through in my mind, I can recollect very little about what you have described.  Pictures would be great, it may help bring back a memory.  A photo of the serial number really helps coming close to the date.  Unfortunately, the records of your board are lost, but the number will help me approximate it anyway.

Last Edited By: Rich Harbour Sep 3 12 7:46 AM. Edited 1 times.