The board is an Exocet Windsup 11'8", it's been lightly used in flat water conditions, I've only been sailing for about a year so I'm not really capable of jumping or riding it very hard in choppy conditions.
Here is the thread I started on it at iwindsurf,
www.iwindsurf.com/forums/viewtopic.php?t=25538After going back and forth with the dealer for many months here is the email I finally got from Patrice, the owner of Exocet;
Sorry for this late answer, after looking at the pictures and different comments on the forum, i can state that the issue is not due to juncture with PVC
We did have such issues on several short boards with similar crease and in most cases it is due to a hard stress, it does not really matter how many time you have sailed with the board but to me it seems that you "may" have sailed it pretty hard one day in side shore and steep choppy water or took off on a even small jump and got some stress on the board
Such crease can be easily repaired in any shop, but i can't see miss manufacturing from our side
If the whole bottom of the board would been soft then you would have had many more waves and in that case it would have been a clear production problem
Let me know if you have further feedback to give me and will answer you straight away
Best regards