In the summer , where I sail , we seldom see more than 9knots of wind .
I do a lot of beam reaching in 7 to 8kts for 10 miles then turn around and reach back . I borrowed a 175 and flew it in 7 knots and by the GPS I was doing nearly 6knots. With the class genny I was doing only 4 at best.
I'm sure I couldn't carry it to weather in a breeze and don't want to try, but it was fun in light air.
The guys I race with , we make lots of headsail changes and have a shelf full of silver . We fly a 190 on the C&C 40 .