Spray the Sunbrella fabric with a garden hose to wet it (really, really wet), this will cause the fabric to relax/stretch. Tighten the strap and allow the fabric to dry on the boat and your future problems should be solved. I was in the textile distribution business for over 20 years and Sunbrella was a fabric we distributed. It is an excellant product and is made with solution dyed acrylic fiber to make its color long lasting. Its only negative is that has a low abrasion resistance and rub/wear points must be reinforced (they are reinforced of the BassCat cover). Dont put lawn chairs, ice chests or any other items on your decks and in contact with the cover and tow at speed down the road or you will wear a hole in your cover (guaranteed!). Also the fabric is not fire resistant and will burn if exposed to an open flame or embers as will most all other boat cover fabrics. If your cover becomes dirty NEVER ever wash it with a power washer as it will remove the silicon water repelant treatment, blow water through the fabric into your boat and also abrade and damage the acrylic fiber.ps: I have a Sunbrella fabric cover on my BassCat, I would not have any other fabric cover material. I would like to be able to retrofit my cover to the new rachet tie down system. Any options/future kit for that?Last edited by Devoreflyer on December 21st, 2012, 1:32 pm, edited 1 time in total.