Whilst glassing the hull of my kayak I have encountered a little problem. I have endevoured to spread the epoxy over the glass fiber evenly and firmly with a squeagy ensuring an even coat all over, yet have noticed a load of coin sized bubbles appearing all over the boat. I thought I could saturate them through on the second coat but didnt really help. Should I wait until the hull is completly cured and sand them out and then lay one more coat on or should I give the boat a third coat and sand them out last ? Please help.