March 25, 2019
Product should definitely be put in a shaker before mixing. Pour the product through a strainer before combining products so you can use the strainer again for your next batch. There were quite a few small chunks typical in most paints. The only thing I wish it was better at would be filling in pinholes. It was difficult to squeeze into the pits and some would not fill. So skim over your pinholes before you start. I used it with biocop tf and would use it again. The marina staff said it's the best looking bottom job they've seen in years. Time will tell.
November 29, 2017
I used the product on an old tub, in this case, not a slow boat but a jetted tub. The bottom of the tub had scores of microfissures. While it was not leaking--yet--it was only a matter of time before it would. The three coats of product went on beautifully after careful prepping of the surface with 150 grit paper, Lime Away to dissolve scale, acetone to remove grease etc, and a tack rag to remove sanding dust. I followed this primer with three coats of Rustoleum Tub and tile paint. That was not nearly as tough or highbuild as the Tuff Stuff. If I had to do it again--perish the thought--I would use a high quality marine epoxy. So far, so good. I am very happy with the results.