I wanted a custom cover for my 13' Boston Whaler. I followed instructions on the website and ordered the boat cover. It did not fit and when I called, they admitted that they sent the wrong cover. I paid to have a new cover sent. It didn't fit either. They tried to get me to keep one by offering a 15% discount. I returned both covers and they reduced my refund by 18%. The "guaranteed fit" is bogus. Find another supplier.
Recommendation: Avoid Seal Skin if you want a guaranteed fit.