Scraping Knee, Wearing Out Wetsuit

I have a cut on my knee, despite wearing a wetsuit. I found that there's already a thin spot on the corresponding location of my O'Neill Psycho-Tech 4/3 that I've had only a few months (about 18 outings).
It looks like this spot gets rubbed against the board when I go from lying to sitting, and I'm trying to move differently to keep things from getting worse.
Has something like this happened to you?
Will I eventually wear a hole in the suit if this continues? Should I put a patch??
Thanks,
Al
It looks like this spot gets rubbed against the board when I go from lying to sitting, and I'm trying to move differently to keep things from getting worse.
Has something like this happened to you?
Will I eventually wear a hole in the suit if this continues? Should I put a patch??
Thanks,
Al