I forgot... yes it is very easy to round the corners of the cushions... mine were square and now have the soft round edges... it has to do with how the fabric is cut and sewn, but I'll show you with photos of the seams, then the polyester fill will help soften the square edge of the foam when inserted into the cushion cover. Avoid zippers, they are expensive, troublesome, and prone to rust.
Thanks for the info. I'm really looking forward to your pictures. We are waiting for the fixes to be done by the owner (the survey showed a little delamination in the bow, so that has to be taken care of first. That means I don't have access to the boat for at least another 3-4 weeks. UGH. But at least I can learn things while I'm waiting.
I agree, velcro sounds like a good way to go...easy to take off, too, if the cushions need re-stuffing.
Thats a good idea with cleaning the existing foam. Thanks for that excellent tip.