Thought I'd try and be clever and take the 6.4 out, but it didn't pay off. Hooked in to only one good squall all day, but I spun out and had to pull out before something bad happened. My timing was pretty bad the rest of the day and I found myself sailing the wrong way in all the other squalls. Rain can hurt quite a bit I found out. I'm left scratching my head as to whether the 5.8 would have been a better choice even though the 6.4 was feeling comfortable on pretty much every run (apart from the first couple when I didn't quite have enough d.haul). Hmmmmmm, will have to wait till the next time.....