I used some 206 once to make a test panel, and I had a lot of clouding later on. The techs at Gougeon told me that they only recommend 207 for clear coating because of that potential for clouding. I'm fairly certain the 205 would have the same problem. If at all possible, use the 207. Build a tent around your boat with some lamps underneath to raise the temperature to a working level.

Ross

: System 3 205 hardner versus 207 hardner. Have people had good results using
: 205 hardner instead of the recommended 207 clear coat hardner? My working
: environment doesn't accomodate the minimum 60F cure temp. until well into
: the summer months.