My first time epoxy lay up..

Hi there, I made my first epoxy layer today. Using Dow 331 epoxy resin ( this is the only one I can found in Hong Kong ), its damn high viscousity make me hard to spread it out on the deck. Though I have heat the resin for 10 minutes before laying. Anyone here got the same experience and how do you handle such high viscousity resin. Regards, Crabie