Slightly off topic, but I just ordered a 5.4koncept online, expecting it to come from Melbourne. But here's the freight tracker for it so far.
Select to expand quote
Perth, Australia 04/01/2015 7:51 Import Scan Changi, Singapore 03/01/2015 23:00 Departure Scan
03/01/2015 7:57 The package is awaiting clearing agency review. / The package is at the clearing agency awaiting final release.
03/01/2015 7:57 The package is awaiting clearing agency review. / Your package was released by the clearing agency. Changi, Singapore 03/01/2015 6:47 Arrival Scan Shenzhen, China 03/01/2015 2:57 Departure Scan Shenzhen, China 02/01/2015 23:03 Arrival Scan Koeln, Germany 02/01/2015 5:11 Departure Scan
02/01/2015 0:01 Arrival Scan Rotterdam, Netherlands 31/12/2014 20:30 Departure Scan
31/12/2014 17:21 Origin Scan
31/12/2014 13:59 Collection Scan Netherlands 31/12/2014 4:55 Order Processed: Ready for UPS
So you see they're actually coming not far from you, not sure if that will help at all.
Like Mr Sloshin, I'm no expert!
I'm using constant curve masts, and they seem to set OK, but I think I'd get more draft with a stiffer bottom or flexier top.
Any way, there are a few of us here using Ka's mainly the koncepts for the GTC, but one of the guys has gone over to the race, and says they are more stable.
But I'm not sure they're quite as fast off the wind, I think they are more designed for a high average speed on a course, not necessarily max speed down wind.
But for distance and hours, they'd probably be better.