I have used the Redtree pink roller covers exclusively for over 30 years. They come in the 7 " size which works great for under 30ft power boats. Properly resduced paint applies evenly and the cover holds a good supply of paint. As for shedding, there is always some shedding whenever using new covers. As a professional painter, I always solvent wash the roller cover and spin it out. You can also gently brush out the cover with a wire bush to help remove loose fibers. I have used this to apply Interlux 2000E barrier coat and had no abnormal shedding problems. As for the other reviewer that did, I'm sure he did not wash, spin and prepare the cover prior to painting. Remember, this is an epoxy and solvent resistant cover. Don't compare it to a Purdy roller cover that you use in your home. If prepared for use, shedding is not a problem. Back rolling into a portion of the paint already setting up will pull fibers from the roller. So always roll away from a wet edge, move swiftly, and constantly add solvent to paint that is setting up too fast. And don't go back, even if you see a defect. Get it the next coat. Paint must be applied at the recommended coverage rate. That said, doing all this correctly in the sun, on a warm windy day, is essentially impossible. This is why big, professional marinas paint inside. No wind, no sun, no weather concerns. If painting outside, try to pick a cool, overcast, wind free day, around 50F - 60F. If impossible, then make sure you get 2 out of the 3. If not, it makes for a real challenge. For those that care, all roller fibers sand off easily after the paint has fully cured. If using ablative paint, a light hand sand before the next seasons launch will remove fibers and open the paint for the seasons use. Or just do what everyone else does, don't worry too much about it. It's bottom paint.