That may not be completely true, or true at all, but it does kind of rule if you are using polyester resin. I’m a huge fan of the UV catalyst and I’ve been using it for about 3 years now, on and off, and have been getting it pretty dialed. I did a board the other day with a resin tint bottom, some additional resin tint splashes on the tail. I then did a resin tinted seal on the foam with multiple tints on the deck as well as doing glass on fins and finished it off with a two 4oz clear deck. I did the usual paste on the bottom and deck before hot coating the board and went 100% UV catalyst. After it was all said and done I only used a total of 2 ¾ quarts of resin and it only took about 3 ½ hours. Another bonus of using the UV catalyst is that the overpowering polyester resin smell doesn’t linger since the resin kicks off as soon as it hits the sun or ultra violet lights leaving less of a chance that a neighbor or family member will complain about the “smell” coming from the garage. Don’t get me wrong, there is still a strong “smell” however, it doesn’t linger as long. So there you go, if you are still hesitant to try it out, call us up and we’ll be more than happy to answer any additional questions.